| Circuits & Electronics | Earth Science & Field Study | Health | Labware & Supplies | Magnets & Magnetism | Microscopes & Supplies | Models | Optics | Physics | Porcelain Labware | Thermometers | Weights & Measures | |||||||||||||||||||||||||||||||
| Physics |
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| Springs & Scales | |||||||||||||||||||||||||||||||
A set of 5 springs with different spring constants (k)- they stretch by 2cm with a load of 0.5N, 1,N, 2N, 3N, and 5N respectively. Prestress has been removed for accurate results. With a hook to support weight hanger and a red arrow to indicate positions. |
 P58031 |
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Transparent, Color-coded. Calibrated in grams & newtons. |
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 P52420 |
 P52402 |
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These large, 12" x 3.5", demostration spring scales are excellent for classroom use. Easily attaches to a support stand and right angle clamp (not included). |
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Laboratory spring scales are used for measuring mass or force. |
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| Pulleys | |||||||||||||||||||||||||||||||
 P51032 |
This unit is excellent for use with an inclined plane or any other similar apparatus. It features a 4.0cm plastic pulley mounted on a chrome plated steel rod. Overall length is 15cm & shaft diameter is 8mm. |
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Durable, lightweight plastic pulleys. Low friction for accurate results. 50mm diameter. |
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Students will never get bored with these brightly colored pulleys. They will add color & excitement to any mechanics experiment. These standard size pulleys are less intimidating to smaller children. |
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This unit consists of a 4 cm plastic pulley mounted on a table clamp with low friction brass cone bearings. It can be used on lab tables or inclined boards for experiments involving the resolution of forces, friction, motion, etc. It can clamp onto surfaces up to 3 cm thick. A crosspiece on the screw offers more gripping force and the felt padding inside the clamp protects table surfaces. |
 P64101-01 |
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These jumbo sized pulleys are designed for classroom demonstration. The single, double, triple, and quadruple pulleys are all 70mm in diameter; the double tandem pulleys have diameters of 70mm and 60mm; the triple tandem pulley has diameters of 70mm, 60mm, 50mm. These pulleys are “open” type - users can run pulley cords through them more easily. Light weight, low-friction and deformation resistant plastic insures accurate results. |
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These well constructed aluminum pulleys are excellent for many different activities. |
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This unit is designed to demonstrate mechanical advantage and conservation of energy. It is fitted with four coaxial pulleys of 42, 58, 75, and 112mm diameter. The wheel is fitted with a ball bearing which turns on a single steel rod. |
 P51031 |
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| Force and Energy | |||||||||||||||||||||||||||||||
 P64111 |
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This device is used to study the friction between two surfaces and the forces on an inclined plane. The inclined board can be set at any angle between 0 and 45º. A hanging pan is provided to hold the desired weight. Two wooden boards with different sizes and a metal plate are included. Students can determine the coefficient of static friction and the coefficient of sliding friction and verify the normal and frictional components of the force exerted by the plane. 26x15x4”, 4lb. Instruction manual included. |
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 P64112 |
This durable carriage has a one-piece high impact plastic body. The machined aluminum wheels and axles are mounted on hardened steel cone bearings for minimum friction and long life. Designed to be used with all types of inclined planes. 5 3/4” L. |
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This unit is useful for coefficient of friction studies when loads are required. This 6X3.5X 2.5” box will accommodate loads of 2 kg or more. Smooth sanded with 2 leather strips attached to the bottom. |
 P64121 |
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 P64114 |
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This complete set includes an inclined plane with pulley and protractor, a Hall’s carriage, and a standard weight hanger. Used to demonstrate resolution of forces, uniform and accelerated motions, kinetic and potential energies. The wooden inclined board measures 60 cm L x 10 cm W, and can be set at any angle between 0 and 45 degrees. The two scales on the protractor allow angle measurements to be made directly or by trigonometry. The aluminum wheel and cone bearings on the Hall’s carriage help minimize friction on the inclined plane. The mass of the aluminum weight hanger is 50g. Instruction manual included. |
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 P62025 |
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This set includes a friction block and a friction board, both made of high quality, smoothly finished pine wood. The friction block has a hook for a spring scale and three compartments for additional weights. It can be placed face-up or sideways. Students can vary the weight or area of contact to see their impact on the friction force. Comes with 3-50g weights and a 100g spring scale. Board is 20x2” and the block is 4x1.5x1”. Comprehensive activity manual is included. |
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 P64302 |
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This unit is desgined for use in the study of motions on a straight line, including the motion with constant speed and the accelerated motion. A trolley cart can move on a nearly frictionless horizontal or inclined track, with or without driving force. The distances the cart travels every 1/60th of a second are recorded on a tape by a spark timer (included). Students can analyze the data to determine the velocity and/or acceleration for each motion. 30x6x7”, 4lb. Instruction manual included. |
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 P64304 |
This device was designed for student labs for the high school through college levels. Easy to set up, use, and store. Comes complete with spark timer and recording tapes. Each tape can record up to three free falls. 30x6x7”, 3.8lbs. Instruction manual included. |
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This classic instrument is used to measure the value of G (gravitational constant) the same way Sir Henry Cavendish did in 1798. Consists of a pair of small lead balls mounted on a “T” member suspended w/ a thin wire and a pair of large lead balls. Oil damping is provided for faster results. Requires a laser (not included). Instruction manual included. |
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This unit consists of 3 energy sources (battery, solar cell, & D.C. generator) mounted on a board and 5 transducers (sound, light, heat, magnetic, & mechanical) mounted on accessory boards. Demonstrates the conversion of energy from one form to another. 14x8x5” Instruction manual included. |
 P58361 |
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 P65011 |
An excellent device for demonstrating thermal expansion. Brass ball & ring with wooden handles. 10”L. |
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An AC operated spark timer with a push button switch and a power indicator. Generates dots on a paper tape every 1/60 second. Features closed construction that prevents shock. Output terminals are provided for additional applications. Comes with a roll of 17 mm recording tape and 32 carbon discs. |
 P64321 |
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 P35021 |
Used to study balanced torque. Clamps securely onto a meter stick with a thumbscrew. |
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This unit is designed to support lever and torque experiments. |
 P64131 |
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 P62011 |
This device is designed to demonstrate the condition for rotational equilibrium of a solid body – the sum of all the torques acting on an object must be zero. The device allows users to investigate the condition in a more general situation that includes non-parallel forces.The disc can be mounted on a support stand as shown. Users can trace the force line on a piece of paper placed on the disc and then use the diagram for analysis. Comes complete with a spring scale and three weight sets. Also comes with a comprehensive activity manual.3’x2’x10”. |
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This kit is a convenient tool for high school and college physics teachers in their teaching of forces and vectors. It includes a vertical force table on a stand to demonstrate the conditions for concurrent forces to be in equilibrium, a movable parallelogram to simulate the addition of forces, and a triangular support to show the type of force in each member of the support. Comes complete with 2 weight sets, a spring scale, and activity manual. 25x25x10”, 4lb. |
 P62010 |
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 P64101 |
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This student force table is a complete set with these new features:
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This unit is constructed of high quality aluminum alloy. This track has the advantage of being lightweight & highly durable. Precision machining provides a smooth surface and high linearity. Comes with a complete accessory package for experiments in linear motion. This unit requires an air source and a timer w/ photogates (not included).150cm L, straightness better than 0.1mm. Instructional manual included. |
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 P64305 |
This 150cm free fall apparatus comes with an electromagnet launcher, two photogates, two steel balls, a plumb, and a catcher. Used with a digital timer (P64311) the unit allows students to study the acceleration due to gravity. 6.5’ x 6.5” x 5”. Instructional manual included. |
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This 4 digit timer is designed to be used with air tracks, free fall apparatus and other equipment to record counts, time intervals, periods of oscillation, accelerations, acceleration due to gravity, and velocities in collisions. Comes with 2 photogates. Instructional manual included. |
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This low noise (<58dB) air source is an ideal accessory for air tracks, air tables, and other pneumatic equipment in physics labs. The 250W motor produces a clean air output with a flow rate of 35m²/ hour under a 0.70 kPa pressure. 8x8x13”. |
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This air table with magnetic accessory pack is designed to simulate the motions of particles such as Brownian motion, motion of gas molecules, motion of liquid molecules, gas diffusion, the isothermal process, the scattering of particles, and circular motion. Requires an air supply (not included). Instruction manual included. |
 P62213 |
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 P52700 |
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This unit can clamp to any horizontal or vertical support rod up to 5/8” (16mm) dia. Holds three pendulums spaced 2 1/8” apart with the points for suspension of the cords on the same horizonal line, each adjusting individually. 10.5” x 2 3/8”. |
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 P62401 |
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This is an excellent unit to demonstrate the laws of conservation of momentum and trajectory. The unit has a scale marked in degrees for noting the height and is registered by a counter weighted needle that remains in place at the height of the pendulum arc. Instruction manual included. |
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These drilled balls are excellent for use as pendulum bobs or in impact/ collision experiments. |
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 P62243 |
This unit demonstrates the transformation between kinetic and potential energies when a steel ball runs on the 52” looped aluminum track. Diameter of the loop is 8”. Track is mounted on a 11.5x4” sturdy cast iron base. A basket is attached at the end of the track to catch the ball. Comes with two chrome plated steel balls. 18 x 14 x 4”. 3.6 lbs. |
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Designed for the study of momentum and kinetic energy in elastic and inelastic collisions. Includes a curved aluminum track, two steel balls, a glass ball, a hollow wooden ball, and a plumb bob. Features a built-in table clamp for easy installation. 10 x 9 x 2-1/4”. 0.5 lb. Comes with instruction manual. |
 P62412 |
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| Maxwell's Wheel | |||||||||||||||||||||||||||||||
 P62261 |
This classic device is used to demonstrate the conservation of mechanical energy. When the wheel is rotated by hand to the top and released, its potential energy will turn into kinetic energy (rotation) as it falls. After the wheel reaches its bottom position, the kinetic energy will change back to potential energy when it moves up again. This process will continue on until the total energy is lost due to friction. All metal construction. 18x2x5”, 5.6lb. Instruction manual included. |
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| Hooke's Law | |||||||||||||||||||||||||||||||
This apparatus shows that the extension of a coiled spring is proportional to the weight of the masses loaded on its hanger. This apparatus has a 12 cm adjustable scale and is marked in millimeters and mounted on a sturdy 30 cm support rod and base. A hook supporting a coiled spring with a mass hanger and indicator is attached to the rod. Comes complete with set of masses that features the “keyhole” to prevent the masses from falling off the hanger. Comes with teaching manual. |
 P62071 |
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| Oscillation | |||||||||||||||||||||||||||||||
 P62222 |
This device demonstrates oscillations under repeated external forces, resonance, and damped oscillation. Consists of two springs connected by a metal cylinder, a hand crank, and a support with scale. 28x8x9”, 5.6lbs. |
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This apparatus is designed to show the vibration of an object when repeated impulses are applied. This demonstrator consists of two weights of different natural frequencies, two cams driven by a 6V motor with speed control, and four springs. The speed control is used to adjust the frequency of applied force for resonance. 11x6x18”. Instruction manual included. |
 P58103 |
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 P58105 |
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This unit is designed for the study of simple harmonic motion. The air track helps reduce friction and allows the students to determine the relations between the period of the vibration and the mass of the oscillator accurately. This unit can also be used to demonstrate the conversion between kinetic and potential energies, and the damped oscillation due to air friction. The attached weight (24g) can be added to the oscillator to vary its mass. A fish tank pump (not included) can be used as an air source. 12x4x5”. |
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| Sound Demonstration | |||||||||||||||||||||||||||||||
 P62101 |
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This unit is designed to demonstrate propagation,reflection, interference,and a number of other resonant models of longitudinal waves. It simulates the action of sound waves. Consists of 2 black, cast iron side supports, a white cloth background and a spiral spring. Comes complete with comprehensive activity manual. Unassembled. |
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 P53202 |
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This hammer is used for striking a tuning fork. It is constructed of a hard rubber head securely mounted on a varnished hardwood handle. |
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 P53190 |
This unit is designed to demonstrate the resonance of sound. Includes a pair of chromium plated carbon steel tuning forks of 440 Hz mounted on wooden resonance boxes. Also includes a rubber hammer. |
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High precision diatonic tuning forks made of aluminum alloy. Produces lengthy vibrations. |
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 P62102 |
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The electronics of this device allows students to accurately determine the speed of sound in air within a short distance (3 to 4 meters). This helps reduce errors due to wind, noise, or attenuation. Easy to set up and operate. Can be used for classroom demonstration or student lab. The accuracy is better than 5%. Requires a digital timer (not included). This unit comes with a comprehensive activity manual. |
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 P62103 |
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This kit includes a sound source, a sound monitor, a microphone, and a pair of speakers. This unit is excellent for demonstrating the properties of sound such as: frequency, amplitude, reflection, resonance, interference and diffraction. Comes with a comprehensive activity manual. Requires an oscilloscope (not included) for some advanced experiments. |
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 P64171 |
A device to investigate the resonance of air columns and determine the velocity of sound in air. This complete unit includes a 100 cm long plastic tube, a movable aluminum reservoir attached by rubber tubing to the bottom of the resonance tube, a triangular support and two tube clamps. With instructional manual. 40x10x10”. 9 lbs. |
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| Overflow Cans | |||||||||||||||||||||||||||||||
Angled spout drains all displace water for high accuracy. Measures 12.5 cm high and 8 cm diameter with 450 ml capacity. |
 P61030 |
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 P61031 |
Light weight, clear plastic can with an angled spout to prevent spillback. Easy viewing from all angles. Single piece construction eliminates leakage. Used for accurate determination of volume, density and specific gravity. Measures 4”x3.5” D. Weighs 2.9 oz. |
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| Gravity & Mass Sets | |||||||||||||||||||||||||||||||
These blocks demonstrate the density of four different materials—aluminum, brass, steel and lead. Each cube is 3.2 cm³ and has a hook. Specification sheet included. |
 P61014 |
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 P61011 |
This set contains four metal rods (aluminum, brass, steel, & copper) of equal size. 13mm diameter & 50mm length. Specification sheet included. |
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Five cylinders (aluminum, copper, lead, tin and zinc) of same mass (30g) and same diameter ( 1/2”). The metal is identified with a stamped symbol on one end. Used for experiments on density and specific gravity. Specification sheet included. |
 P61016 |
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 P61017 |
These cylinders demonstrate the inverse relationship between density and the length for cylinders of the same mass and diameter. This set consists of 5 cylinders (copper, aluminum, nylon, polyvinyl chloride, polyethylene) of the same mass and diameter. All the cylinders are 12 mm (1/2”) in diameter and range from 14 mm to 120 mm in length. |
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| Heat Instruments | |||||||||||||||||||||||||||||||
These units are used with a calorimeter to determine various specific heats. This 5 cylinders set consists of aluminum, copper, zinc, tin, and lead. All the cylinders are the same mass (58g) and same diameter (19 mm). A small knob with a groove on the top for string provides convenience and insures accuracy (by not using a hook made of a different metal). Specification sheet included. |
 P61015 |
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 P65013 |
A Heat Conductometer is used for comparing the thermal conductivity of five metals: aluminum, brass, steel, nickel, & copper. The 5 spokes radiate from a brass hub. Each rod is marked on the rods. There are notches in each rod to hold the wax. This unit comes assembled with a supply of wax. Instruction manual included. |
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 P65012 |
 P65010 |
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An excellent unit for determining heat capacity and the electrical equivalent of heat. Inner & outer vessels are made of aluminum. The electric unit has a two section heating element which operates on a 6V power supply (not included). Instruction manual included. |
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This unit is designed for studying currents in the air. The anodized aluminum box has two acrylic chimneys. The sliding glass door allows for easy access to the candle. Comes with a candle and touch paper. 8.5x3.5x4” Instruction manual include. |
 P65014 |
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| Hand Pump | |||||||||||||||||||||||||||||||
 P62210 |
This heavy duty hand pump is a combination of a pressure pump and a vacuum pump, specifically designed for physics labs to evacuate small amounts of air. Made of seamless metal pipe with a hardwood handle.14x4x1.25”, 13oz. Instruction manual included. |
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| Magdeburg Hemispheres | |||||||||||||||||||||||||||||||
These are an economical substitute of a classic physics equipment. Made of two rubber cups with chrome plated steel handles. After placing the cups together and squeezing the air out, students will find it difficult to pull them apart. Teachers can also hang up to 28lbs to the handles to show the force of air pressure. No vacuum pump needed. Diameter of suction cups is 2 1/8”. |
 P62533 |
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 P62531 |
This heavy duty Magdeburg hemispheres is closer to its original version than the plastic or rubber models. Thick cast iron walls withstand high pressures. Brass valve and precision machining prevent leakage. 8.5x4x4”, 4.4lb. |
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| Water Demonstration | |||||||||||||||||||||||||||||||
This device is used to show that water pressure will transmit in all directions. Consists of a hollow sphere connected to a hand pump. The sphere has an outer diameter of 3” and a capacity of 250ml. Ten projected nozzles are evenly distributed on the sphere. 14x4x4”. Instruction manual included. |
 P63521 |
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 P61101 |
This unit is designed to demonstrate Archimedes Principle - a body submerged in water loses weight equal to its own volume of water. Consists of an aluminum cylinder and bucket whose volume is equal. Cylinder is 45mm x 19mm, bucket is 50mm x 25mm. |
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This new model has a much larger capacity (100ml) than the traditional aluminum model (22ml) for higher accuracy and easier operation. In addition, both the cylinder and the cup have marked divisions which allow the students to repeat the experiment with different volumes. Made of white nylon. This unit is used with a 200g spring scale, an overflow can and a beaker. Comes with an activity manual. |
 P61102 |
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| Friction Rod | |||||||||||||||||||||||||||||||
 P56000 |
A solid polystyrene friction rod with tapered end. Also comes with a 8x10” silk pad. Rod dimensions are 0.5” dia. x 12”L. |
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| Electrostatic | |||||||||||||||||||||||||||||||
High quality static machine for student labs. This unit provides high voltage electric charges for a variety of electrostatic experiments. A comprehensive activity manual and an extra set of belts are included. |
 P62301 |
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 P63512 |
 P63512-1 |
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Consists of a plastic base, a metal support stand with a circular clamp on top, and evenly distributed nylon strings hanging from the top. When subjected to electric charges, the electrostatic pompon will stand on end. 7x3x3”, 2.3oz. |
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| Electroscopes | |||||||||||||||||||||||||||||||
A pair of lightweight plastic balls are suspended from a hook support with a piece of string. The support is mounted on an insulated base. Provides a simple yet effective way to learn about electrostatics. |
 P56004 |
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 P56001 |
This unit is made up of a rubber stopper, alligator clip, and ball & rod. It is ready to be inserted into a 250ml narrow mouth flask. Comes with foil. Instruction manual included. |
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Consists of a metal rod with discharge ends, supported at the center by an insulated base. When the end is approached with a friction rod it will spin due to the discharging at the sharp points. Does not require a Van de Graff generator. |
 P56005 |
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 P56008 |
This unit is designed to show how two similarily charged objects repel. Has a 10cm viewing area. Includes three aluminum leaves, alligator clip, glass panels, ball terminal, insulator, and activity manual. |
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This high sensitivity electroscope can detect the charges a regular electroscope cannot. A gold leaf is mounted on an insulated rod in a grounded metal case. The glass windows at the front and back of the case allow for easy observation or projection. |
 P56006 |
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| Ripple Tank | |||||||||||||||||||||||||||||||
 P62110 |
This device demonstrates the generation, propagation, reflection, interference and diffraction of waves. Comes with all accessories necessary for these experiments. Requires 6V DC power and an overhead projector (not included). 38X31X9 cm. 5.2 lbs. Instruction manual included. |
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| Lorenz Force | |||||||||||||||||||||||||||||||
Demonstrates the motion of electrons in a magnetic field, and determines the charge-to-mass ratio of an electron (e/m). Accelerating voltage is continuously variable between 0 and 250V. Polarity of voltage on deflecting plates and polarity of electromagnet can both be reverted. Lorenz tube is 180° rotatable. With built-in power supply, instruction manual and wooden storage case. 35X45X30 cm. 24.2 lbs. Instruction manual included. |
 P63412 |
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| Van De Graaff | |||||||||||||||||||||||||||||||
 P62302 |
This mid-size static machine can generate an electric potential of tens of thousands volts for a variety of electrostatic experiments. Comes with a shock-proof power switch and a spherical discharger. 53X35X23 cm. 11 lbs. |
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| Michelson Interferometer | |||||||||||||||||||||||||||||||
This classic device is designed for the observation of light interference and for the measurement of the wavelength of a monochromatic light. It is a versatile instrument for optic and general physics. The travel distance of the movable mirror is 200mm. The resolution is 0.0001mm. A comprehensive instruction/ activity manual is included. 50x21x36cm; 15kg. |
 P67601 |
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| Franck-Hertz Apparatus | |||||||||||||||||||||||||||||||
 P67103 |
This apparatus uses an argon tube to eliminate the need for an oven. The "1-piece" design minimizes wiring so students can focus on the theory and data collection. Panel meters show the voltage and corresponding current. Output can be directed to an oscilloscope. 16x9x5”. Instruction manual included. |
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| Planck's Constant | |||||||||||||||||||||||||||||||
This unit is designed to measure Plank’s Constant using Einstein’s equation of hotoelectric effect. Consists of a mercury light source, a receiver with 6 different high quality filters, and a micro-current measuring apparatus. The device is easy to operate and yields high accuracy and repeatability.23x15x15”. Instruction manual included. |
 P67401 |
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| Millikan Oil Drop Apparatus | |||||||||||||||||||||||||||||||
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This unit was designed for student labs in modern physics. It allows students to obtain the fundamental electric charge in 2 ways by balancing the oil drop and by measuring its velocity. The charged oil drops can be varied by a built-in mercury lamp. The motion of the oil drops can be observed with an eyepiece, or on a monitor. Instruction manual included. |
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| Newton's Ring Apparatus | |||||||||||||||||||||||||||||||
This high quality Newton’s Ring Apparatus was designed for college and high school students to study interference and phase change of light upon reflection. Can be used with different light sources. Consists of two optical glass plates with a diameter of 35mm, mounted in a metal frame. The distance of the plates can be easily adjusted with three thumb screws. The curvature of the plate is 855cm. 2.5x2.5x1.25”, 7.2 oz. |
 P66612 |
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| Specific Gravity Bottle | |||||||||||||||||||||||||||||||
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These uncalibrated specific gravity bottles are excellent for determining the specific gravity of liquids. The borosilicate bottles feature a ground stopper for a precision fit. |
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