Inertia Demonstration Kit Chemistry Two-speed ticker timer kit printing

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

the flywheel light enough to drive by breath for hands-on reciprocating-engine study

supplied in a storage case for student precision work

and control strips for a fuller genetic-taste-perception activity

Proves horizontal velocity does not affect vertical fall time through a push-button launcher that simultaneously projects one steel ball and releases another

Inertia Demonstration Kit Chemistry Two-speed ticker timer kit printingDemonstrates 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.