2" Friction Cube with 4 Surfaces and Hook Subcategory_Lab Jacks Relay-based NAND-gate module on a

Relay-based NAND-gate module on a demonstration base

connecting lightweight clamps and accessories to retort stands in small-scale laboratory assemblies

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

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

and leak testing

2" Friction Cube with 4 Surfaces and Hook Subcategory_Lab Jacks Relay-based NAND-gate module on 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.