4-Piece Specific Gravity Cubes Set with Hooks Lab Supplies_Tongs and inner ear sections support

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

and raised-graduated for shatterproof bench use

and concentrated oxidizer monitoring in water-treatment workflows

Entry-level two-part human skull model separates the skull cap to reveal the cranial cavity for introductory head-anatomy teaching at secondary and college levels

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

4-Piece Specific Gravity Cubes Set with Hooks Lab Supplies_Tongs and inner ear sections supportFour 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.