"power+supply"

Hand and motor powered dynamo.

This economical demonstration solar car can be powered by a solar cell or a rechargeable battery (AA size, not included).

Make your herbarium mounts last with this top-quality stock. The white paper has a high rag content that is ideal for mounting purposes. Size: 29 x 42cm. Package of 100. Thickness of .0105 inches.

High-quality supplies in a simple package.

Poster Putty offers a temporary, reusable alternative to nails, screws, staples and glue.

Dual purpose for Dual Benefits

Pencil box keeps writing instruments together and conveniently stored away

Build five different power supplies by connecting clip leads to one of the five color-coded terminals.

A Great Classroom Solution.

Basic apparatus for providing contact, power supply and support to a germanium crystal on a circuit board in experiments on the Hall effect or on conductivity. Includes an integrated, adjustable constant current source to provide the current through the sample, a measuring amplifier with offset compensation for Hall voltages and heating to raise the crystal to as high as 170 °C, also featuring temperature regulation and a switchable display showing Hall voltage, sample current, sample voltage or temperature.

Easily lift large prints.

Makes any container tamperproof.

Bring Cartridges into the classroom safely.

Black ink pad of size 1¼L×2¾"W.

A Clean, Quick, Easy Way to Make Footprint Impressions