The Centralab (CRL) 1401 is a commercial-grade 1-pole, 6-position non-shorting rotary switch integrated with a broad-base volume control housing. Constructed with a durable phenolic insulator deck and cadmium-plated brass hardware, this unit features a standard single-hole 3/8-32 threaded mounting bushing. Designed for vintage radio, receiver, and audio equipment restoration, the assembly utilizes a 1/4-inch full round shaft measuring 2-1/4 inches in total length with 1/2-inch spacing between sections.