7-Piece Glass Prism and Lens Set, 13mm Thick, with Wooden Storage Heat & Thermodynamics_Pressure & Gas Laws Eight-inch external probe on a

Eight-inch external probe on a 36-inch cord on this handheld digital thermometer

and storage between uses at the laboratory bench

Six-piece transparent acrylic prism and lens set with all faces polished

the shared mass isolating volume and density as the distinguishing variables across metals and polymers

verifying conservation of momentum in two dimensions for mechanics-unit investigations

7-Piece Glass Prism and Lens Set, 13mm Thick, with Wooden Storage Heat & Thermodynamics_Pressure & Gas Laws Eight-inch external probe on aSeven piece glass prism and lens set at 13mm thickness with all faces polished, the wooden storage box housing optical grade shapes for dispersion, refraction, and image formation work.