The Atlas 1924E selector volume control switch is a multi-section rotary switch assembly designed for circuit selection and audio level control in radio chassis and test equipment. Manufactured by Atlas, this unit incorporates three ganged wafer sections spaced to allow inter-stage isolation and wiring clearance. As a rotary selector switch, it does not feature a continuous resistive element or an integrated electrical taper; resistive ratings depend on external resistor networks wired to its terminals. The dual-shaft arrangement features a 3/4-inch outer round shaft and a 1/4-inch flat inner shaft, enabling independent control of separate switching stages from a single panel location.