Boyle's Law Glass Tubes, Open and Closed, 2-Piece Entomology & Zoology_Zoology Charts & Models Element-stamped 20mm solid brass cube

Element-stamped 20mm solid brass cube for density investigation

Wooden handle supports a 12-inch bristle cleaning brush for scrubbing general glassware

LED circuits

and redistribution during cell division for biology instruction

supplying two voltmeter scales on one accessory so students switch between low and mid-cell voltages without rewiring

Boyle's Law Glass Tubes, Open and Closed, 2-Piece Entomology & Zoology_Zoology Charts & Models Element-stamped 20mm solid brass cubeTwo piece Boyle's Law glass tube set with one open and one closed tube, sized for demonstrating the inverse pressure volume relationship of a gas at constant temperature.