Double Convex Acrylic Lens, 89mm, 20cm Focal Length, Clear and Frosted Subject_Zoology Standard rheostat at 16 ohms

Standard rheostat at 16 ohms and 4A with oxidized constantan winding on a vitreous-enameled steel tube

237kg hooked masses for measuring spring extension under load and calculating spring constants

electromagnet coil

Produces steam for thermal-expansion and phase-change experiments through a thick-wall 1L aluminum can on a cast tripod base with a spring handle and size-13 stoppers

available in 110V/60Hz and 220V/50Hz input versions

Double Convex Acrylic Lens, 89mm, 20cm Focal Length, Clear and Frosted Subject_Zoology Standard rheostat at 16 ohmsAcrylic double convex lens at 89mm with one clear face and one frosted, 20cm focal length, the frosted side acting as a screen for projected real image observation.