Catalog number R20-CS.
The classroom kit of Resistance Boards includes 10 sets of: Pencil Lead boards, Wire Resistance boards, three kinds of pencil leads, eight clips, four pairs of binding posts, four gauges of nichrome wire, printed cm-gauge labels for the boards.
The Ohm’s Law Kit includes 10 sets of: four different of carbon resistors, AA and 2-AA battery holders, plastic canvas to mount resistors.
Assembly required. Batteries and digital multimeters (20 needed) are available from several vendors.
Note: picture shows part of the classroom set.