2" Friction Cube with 4 Surfaces and Hook Subcategory_Lab Jacks Twelve-ball drilled set in a

Twelve-ball drilled set in a foam-lined plastic case with two each of aluminum

curving visibly under heat as the two metals expand at different rates

Relay-based NAND-gate module on a demonstration base

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

secured on a plastic-ended metal rack with a carrying handle for physics force and acceleration experiments

2" Friction Cube with 4 Surfaces and Hook Subcategory_Lab Jacks Twelve-ball drilled set in aTwo inch friction cube with four distinct faces wood, paper, vinyl, sandpaper and a hook on one side, letting students pull each surface against the same bench to measure mu_s and mu_k.