Introductory Optical Bench Set with Lamp Housing and Lens Holder Subcategory_Electrostatics shipped with 100 discs and

shipped with 100 discs and a tape roll in a clamping-plate-ready case

Sodium chloride lattice kit with 27 color-coded gray and green atoms plus 54 connectors for building the full cubic NaCl crystal structure in three dimensions

visible crankshaft

sized for cleaning narrow-diameter tubes

sized to dust evenly over paper or around a magnet to make field lines visible during introductory magnetism work

Introductory Optical Bench Set with Lamp Housing and Lens Holder Subcategory_Electrostatics shipped with 100 discs andSliding rail aluminum bench with 1. 2m measuring tape, a lamp house, universal 50 x 50mm slide holders, pin and gauge objects, slits, scale, concentric circles, and a dual scale screen.