Description:
Decade resistance box consisting of five dial switches of 0.1, 1, 10,100, and 1000 ohms with ten steps each. There are also two small binding posts to the side of the dial switches. These elements are mounted on a hard rubber panel over a rectangular wooden box. The internal resistance made up of 5 coils for each decade and special switching.
Original museum card notes that this instrument probably had a "long history" during and before its use in the Science Center prep room at Harvard University.