Simple Machines Wheel and Axle Model Class_Class B this Brownlee-pattern apparatus gives a

this Brownlee-pattern apparatus gives a clean visual proof of the 2:1 stoichiometry of water decomposition

Research-grade oxygen spectrum tube at 26cm with a 10cm central capillary

this enhanced optical bench set ships with a lamp housing and a matched complement of optical components

14 push buttons

Aluminum 40cm precision force table with tapped pulley positions and central ring assembly for resolving and composing force vectors under equilibrium conditions

Simple Machines Wheel and Axle Model Class_Class B this Brownlee-pattern apparatus gives aWooden wheel and axle simple machine model on a 9. 5x3. 375 inch base, demonstrating how a crane lifts loads through the mechanical advantage of a large wheel turning a small axle.