4-Piece Specific Gravity Cubes Set with Hooks Lab Supplies_Tongs Extending up to 65 feet

Extending up to 65 feet from a 20cm closed height on the included wooden stand

hand-cranked so students trace how shifter engagement alters gear ratios and output torque selection

and inner ear sections support detailed auditory anatomy teaching at 3x enlargement for classroom visibility

and raised-graduated for shatterproof bench use

with masses between 50 and 400g for 5N spring-scale suspension work

4-Piece Specific Gravity Cubes Set with Hooks Lab Supplies_Tongs Extending up to 65 feetFour cube specific gravity set in brass, iron, aluminum, and zinc, each 20mm on edge with a top hook for suspending in water during Archimedes principle and buoyancy experiments.