Physical description

Student Potentiometer (Type D-73-E) set in wooden box with lid. Black control panel with various dials:two for VOLTS & MILLI-VOLTS; others for galvanometer sensitivity, battery rheostats, etc. 24.1 = potentiometer 24.2 = lid

Inscriptions & markings

Plaque on front of box: “J.L.William Scientific Instruments Serial No. 1480. Type D-73-E Melbourne Australia”. Inscribed on control panel: “J.L.William Scientific Instruments Melbourne Australia. Various control panel markings.