A fine instrument for determining the radius of curvature of spherical surfaces such as mirrors and lenses. Its micrometer screw is graduated to measure displacement as small as 0.01mm. The instrument has two brass plates and three steel legs. A flat glass plate is provided for support while…

Our meters are mounted in black plastic cases. Meters have a scale length of 75mm, offer +/- 2.5% accuracy and come with 5-way binding posts and an external zero-setting screw. Meters are not protected against prolonged or significant overload. Stackable for storage.

The Earth/sun system demonstrates the seasons, eclipses, and the phases of the moon. The sun has a LED that sends a spot of light onto the Earth. The sun turns with the handle as the user changes the seasons. The moon revolves around the Earth as the Earth rotates around on its axis. The angle of…

An optical bench allows you to perform and observe the fundamentals of optics such as image formation, reflection, refraction, and more. The bench consists of a painted, square aluminum bar, two molded supports with leveling screws, and graduations from 0cm to 100cm, subdivided in millimeters. Feel…

An entire optics set at a great price. Includes everything you need to demonstrate basic principles of light and color. Comes in a reusable storage box. Includes 1 Doubel convex lens (38mm diameter, glass), 2 acrylic equilateral 25mm x 50mm prisms, 1 double concave 38mm glass lens, 1 plain 38mm…

The Electrostatic System Physics Kit includes 26 components for 11 guided activities. With this kit students can explore common experiments such as The Gold Leaf Electroscope, Positive and Negative Charges, Insulators and Conductors, and Coulomb’s Law. Includes 11 experiment guides: Exploring…

The Variable Inertia demonstrates an abstract concept in an easy-to-understand manner. It consists of two semi-clear plastic discs with the same mass and diameter. The discs are hollow inside with molded compartments. The 19mm steel balls can be placed inside the discs in a variety of…

Excellent tool for demonstrating the principle of fiber optics.  The curled 48" long clear acrylic rod conducts light by internal reflection. A flashlight or laser pointer can be used for the demonstration.

Explore basic mechanics concepts with this all-metal, freestanding apparatus, designed for both durability and ease of use. The plane is wide enough to accommodate standard friction blocks or a Hall’s carriage with a smartphone attached, and its walled construction prevents objects from falling off…

The Ultrasonic Grating Apparatus is both a unique demonstration of the interaction of longitudinal sound waves and transverse light waves and also a method for the precise determination of the speed of sound in liquids, which is otherwise difficult to do in the undergraduate lab. The core of the…

GSC International N-00002 DC Ammeter Digital with Connectors Range 3A,1mA. The 3A, 1mA Digital DC Ammeter with high accuracy is small and light enough to connect with any circuit. A 3 volt lithium battery is included. Two alligator clips are directly connected with the meter’s main body for…

Rugged Plastic Pulley with deep V groves mounted on a metal clamp. Th sheave is 50mm in Diameter. Clamp can be mounted on surfaces up to 35mm thick.

EXPLORE CHEMICAL REACTIONS Vinegar and Alka-Seltzer react to create gas inside the closed canister. Pressure builds as the amount of gas increases. Eventually, the pressure pops the lid off the canister, allowing the canister to launch into the air! STEM LEARNING Introduces and demonstrates…

Sturdy support for meter stick demonstration balances and torque experiments. The cast metal support is 18.5 CM high. Requires knife-edge clamps, slotted weights and hangers, and a meter stick. Shipping weight: 0.5 Lbs., dimensions: 7" x 3" x 3".

Our resonance tubes are made from borosilicate glass. These resonance tubes are non-graduated. Use them to build your own resonating column demonstration or velocity-of-sound-in-air demonstration. We also sell graduated resonating tubes . PRODUCT WARNINGS Our products are not toys .…

The Color Filters are used to study additive color mixing in a science classroom or home school. The color filters are made of gelatin material. Five different colors are included in the kit: red, green, yellow, orange, and blue. The kit is provided with a detailed and informative instruction guide.

Our Lensatic Military Compass is an extremely accurate compass and includes many useful features. This compass is calibrated for North America, is shock resistant, and can determine the location of stationary terrain such as rocks and trees. Instructions included. Includes: Compass card…

The ball is placed on top of the acrylic square, which is positioned on top of an aluminum post. The spring is pulled tight and then released which shoots the square out from under the ball. The balls falls into a concave recession in the post. Similar to pulling a tablecloth out from under a set…

This simple and ingenious device quickly and graphically shows students how different metals conduct heat at different rates. It consists of four identically-sized bars of common metals - steel, brass, aluminum, and copper - mounted parallel to one another in a plastic support. Attached to each bar…

Suitable for miniature base lamps. Accepts all replacement bulbs listed on this page. Plastic base, with brass screw type receptacle and two terminals. Miniature Bulbs for use with lamp boards and lamp/bulb holders.

Powerful Alnico 1 bar magnets, shipped in pairs, with separators and keepers. Width 1/2, Thickness 1/4.

This clear plastic 12" ruler is scaled in 1/16" increments on one side and MM on the other.

Constructed of anodized aluminum, with steel hooks, this spring scale is extremely durable. Available in seven color-coded sizes.

These pulleys are made of black plastic, have a metal housing, and have hooks at the top and the bottom. All wheels are 50mm in diameter except for the smaller wheels on the tandem models. We offer several varieties in both parallel and tandem styles. PRODUCT WARNINGS WARNING: …

Sturdy economical scale for general use in the lab. It features a round plastic weighing platform. Capacity is 5 kg, or 11 lbs.

Pulley has a diameter of 2" Pulley has a metal low friction bearing installed Rod is made of durable aluminum. Pulley is made of durable plastic. Rod has a 12mm diameter Total length of rod and pulley is 10" - Pulley has a diameter of 2". Pulley has a metal low friction bearing installed. Rod…

This economical seven piece kit lets you demonstrate the conversion between different forms of energy. It includes four devices for generating electrical energy from mechanical motion (hand generator), chemical energy (batteries), light (solar energy), and wind (windmill) and three devices for…

The classic demonstration of spectral lines. Each tube has its characteristic spectrum when energized before a spectroscope. These tubes acquaint students with the spectra of common gasses in their pure form as well as for demonstrating wavelength. The glass tubes are 25 cm long with the capillary…

Friction Rods are 12"; long unless noted. Excellent for demonstrating static electricity

Set of five color filters (2.5" x 2.5" x 1/8") made of acrylic. Includes one each of the following colors: red, orange, yellow, blue and green.

A glass tube 45cm long with a large piece of a membrane attached to one end. When the membrane is filled with sugar solution and immersed in water, the liquid in the tube will rise, showing osmotic pressure in a clear demonstration. Instructions included.

Polished Flint Glass or Acyrlic Right Angle Refraction Prism.