Strong steel magnets, zinc-plated with North and South poles marked. Supplied with keeper.

This device can be used as a classic standard calorimeter or as an electric calorimeter. Made of aluminum and plastic, the calorimeter has a diameter of 10cm, height of 11cm, liquid capacity of 175ml, and a heat capacity of 25J/°C. Electrical requirements are 6V DC, up to 2A.

An essential accessory for experiments with the popular Bicycle Wheel Gyroscope as well as for demonstrating the effect of moment of inertia on rotational motion (the “spinning skater effect”), this economical Rotating Plate spins freely due to its heavy duty ball bearing axle. Features…

Featured displays of this electronic alarm stopwatch include time (hours-minutes-seconds, with 12 or 24 hour mode option), calendar, 24-hour stopwatch, alarm, hourly chime, 1/100 second chronograph, split time, and total time. It is lightweight, easy to operate, ad comes complete with battery and…

This Hall's carriage has a durable plastic body with a roomy well for additional masses (not included). The machined aluminum wheels and axles are mounted on hardened steel cone bearings for minimum friction and long life. For use with all types of inclined plane. Shipping weight: .30 Lbs.,…

This simple but precise launcher projects 16 mm steel balls at ranges suitable for use on the bench top or from the bench to the floor. A protractor and plumb line make it easy to set any required launch angle from 45° downwards to straight up. Three different spring tensions give three…

The Phase and Group Velocity Apparatus (oscilloscope not included) uses sound waves in the ultasonic region to clearly illustrate and distinguish the often poorly understood phase and group velocity concepts. It permits precise measurements of the velocity of sound in up to three different liquids…

Acrylic or Flint Glass equilateral refraction prism, measuring 75mm long by 9mm thick.

This low cost apparatus is great for demonstrating Boyle's law (elasticity of gases). A plastic syringe is mounted on a wooden base. A piston is mounted to a platform that holds various size weights, allowing students to plot pressure versus volume of gases in the cylinder. Dimensions: 9"…

Plastic Insulated Copper wire is 22 gauge, supplied in 100 foot rolls and available in three colors. Bare Nickel Chromium Wire is supplied in 4 ounce spools. Enameled Copper Magnet Wire is supplied in 4 ounce spools. Soft Bare Copper Wire is available in 4 ounce or 1 lb spools.

High precision interferometer with interchangeable optics for Michelson or Fabry-Perot setups. 200 MM precision geared lead screw for fine adjustment. This product has a 90 day lead time. Market standard for this type of product.

Discover the science of music with the tuning fork and striker set. The 256 Hz tuning fork is made of high-quality aluminum alloy and has been accurately calibrated. A rubber hammer striker for sounding the tuning fork is included. The resonance frequency is stamped on the tuning fork.

This three dimensional model allows students to study our solar system -- looking at planets' relative sizes and colors. Planets can be set by month to show their relative positions. The 5.9" sun is supported on a sturdy base with the outer most (dwarf) planet being 18" from the sun. An illustrated…

This Collection contains 20 Types of Basic Rocks Specimens of Igneous, Sedimentary & Metamorphic Rocks Types. The Rock Specimens include Basalt, Gabbro, Granite, Obsidian, Pegmatite, Pumice, Anthracite, Gneiss, Marble, Quartzite, Serpentine, Slate, Chalk Lumps, Conglomerate, Diatomite, Flint,…

Igneous rocks form through the cooling and solidification of magma or lava. Igneous rocks may form with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks. The set includes Andesite, Basalt, Diorite, Dolerite, Gabbro,…

This is an excellent and economical set for introductory ray optics. The laser ray box projects one, three, or five parallel bright beams and is equipped with a momentary switch for safety. A vinyl template with a degree circle and a linear scale forms the optical disk, and the set includes seven…

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…

Includes a 50g aluminum hanger and 12 aluminum weights, 9 x 20g, 1 x 10g, and 2 x 5g.

Glass thermometer with red Toluene solution is mounted on a plastic backing card. Range is -40° to +50°C .

This economy Hall’s carriage is perfect for demonstrations and investigating principles such as Newton’s laws, acceleration, velocity and friction. This economy Hall’s carriage has a durable plastic body with a roomy well for additional masses (not included). The hole…

The 630-point solderless breadboard is built with high-quality construction that can withstand repeated use. It includes color coordinates that are screen-printed for easy reference. This breadboard is perfect for investigating circuit designs and prototyping. It accepts most electronic components…

This magnifier offers an extra large field of view, hands free use, and folds down to a compact size for storage. Its 10cm lens provides 6x magnification. Ideal for use on a lab table, and for dissecting small specimens like owl pellets.

Painted Red and supplied with a keeper. Available in 3"; (left photo) or 1"; (right photo)

Magnifying Glass with a glass lens, metal frame, and bakelite handle.

This basic breadboard kit contains all of the basic connecting parts to start exploring circuit design. The kit includes a variety of connecting cord sizes and two breadboards. All that is required is to provide components such as resistors, LEDs, or capacitors. Kit Contents: …

Set of equipment for studying the nuclear magnetic resonance of protons in hydrogen and fluorine and measuring the gyromagnetic ratio, Lande factor, and nuclear magnetic moment of these nuclei. Includes permanent magnet, oscillator, frequency counter, and power supply. Requires an oscilloscope. …

This versatile spring scale can be used to measure forces using push or pull functions, or to weigh a suspended object from the large hook. Includes a zero adjustment screw and a metal suspension ring. Available in six color-coded sizes.

Inspired by naval periscopes used on submarines, our handheld periscope is designed to show students the reflective qualities of light. Our version consists of an outer case with mirrors at each end set parallel to each other at a 45 degree angle.

Each specimen in this set of five diverse materials cylinders has identical mass and radius. Materials included are acrylic, PVC, nylon, aluminum and brass. Includes a storage box and activity guide.

A set of colorful ceramic disc magnets, in six primary colors. Magnets are 25mm in diameter.

2"; long, plain, chrome plated alligator clips with excellent conductivity. 2"; long, with insulated sleeve, chrome plated alligator clips with excellent conductivity. Pack of 10, five each red and black.

This versatile and tough steel inclined plane includes a graduated protractor and an adjustable pulley. Incline is 4" wide x 23" long. Includes a 14oz. Roller that can be used as a vehicle on the plane or as a counterweight. Also includes a pan and cord for masses.