16.25" Gear Train Simple Machine Model Handle Type_Wood Selected through four rotary-switch decades

Selected through four rotary-switch decades from 0 to 11

Seventy-eight-piece molecular model set with 45 atoms and 33 bonds for building basic organic and inorganic structures

Student pulley demonstration set with a range of pulleys for mechanical-advantage and force-multiplication comparisons

Heavy-base Bunsen burner adds stopcock gas control for fine flame adjustment during chemistry experiments with liquid propane or butane fuel

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

16.25" Gear Train Simple Machine Model Handle Type_Wood Selected through four rotary-switch decadesUsed to demonstrate how meshing gears transmit rotation, change speed, and multiply torque, this 16. 25 inch gear train simple machine model arrives ready to use with no assembly required.