Inertia Demonstration Kit Chemistry one fitted with an exploder

one fitted with an exploder piston for impulse experiments

Two-speed ticker timer kit printing 25 or 40 dots per second on paper tape via carbon discs

Acrylic bell-in-vacuum jar with an internal 4-6V DC electric bell that fades and falls silent as the enclosed air is removed

Miniature desktop torso with 12 removable parts includes a dissectable head and brain for compact classroom anatomy and biology teaching

Wooden handle supports 13

Inertia Demonstration Kit Chemistry one fitted with an exploderDemonstrates Newton's first law by yanking a metal card from beneath a steel ball, leaving inertia to drop the ball straight into the waiting receptacle below.