Optical Lens Set, 2", 6-Piece, Convex and Concave Material_Polypropylene 3 glass Griffin-form beaker shot

3 glass Griffin-form beaker shot glasses hold 3

reading -50 to 300°C at ±1°C accuracy up to 200°C for a range of lab heating

Half-size digestive system model fits smaller class benches while preserving the full esophagus-to-rectum path and accessory organ anatomy in two removable parts

Hooke's Law

Optically-worked glass double convex lens with a 150mm focal length and 1

Optical Lens Set, 2", 6-Piece, Convex and Concave Material_Polypropylene 3 glass Griffin-form beaker shotSix lens optics set of three double convex and three double concave glass lenses with ground beveled edges, designed for image formation and focal length investigation.