Brass Specific Gravity Cylinder with Hook Geology_Geology Charts & Models Square-topped wooden screw simple-machine model

Square-topped wooden screw simple-machine model with a leverage block

Hand-painted male pelvis model exposes the narrower male-specific proportions and pelvic inlet shape compared to the female pelvis for sex-difference anatomy teaching

25-inch base raises a magnetic needle to a 4

and a stirrer for themed home-bar gifting

Autoclavable

Brass Specific Gravity Cylinder with Hook Geology_Geology Charts & Models Square-topped wooden screw simple-machine modelBrass 2 by 0. 5 inch specific gravity cylinder with a top hook for spring scale massing, a mid density reference for comparative experiments alongside the copper and aluminum cylinders.