Richmond Electronics decade capacitance box, type RE 1300. A portable laboratory instrument designed to provide selectable, precise capacitance values for testing, calibration and circuit development. In a metal carrying case with hinged lid and front panel fitted with multiple rotary decade dials, toggle switches and terminal posts.
Marked Richmond Electronics (Maryate) Ltd., it reflects British manufacture and mid-century electronic test equipment design. Instruments of this type were used in laboratories, technical colleges, telecommunications workshops and research facilities for circuit development and fault finding. 1960s to 1970s, prior to widespread digital component measurement systems.
