4-Stroke Gasoline Hand-Crank Engine Model, 13.75" Science at Home_Life Science 25 inches tall with five

25 inches tall with five 4

Cubic 16 by 16 by 16 cm footprint defines this autoclavable polypropylene test tube basket

a compound unit for demonstrating multi-rope mechanical advantage in physics activities

Borosilicate 3

Needle valve and flame stabilizer deliver fine flame control on this liquid propane Bunsen burner for precision chemistry and biology heating work

4-Stroke Gasoline Hand-Crank Engine Model, 13.75" Science at Home_Life Science 25 inches tall with fiveHand cranked 4 stroke gasoline engine model at 13. 75 inches tall with visible crankshaft, camshaft, valves, rocker arms, push rods, and an ignition light that fires on compression.