Physical description

Hand held communications microphone with push button rotary switch. Made of alloy and bakelite with flexible cable which terminates in a three pole line plug. The rotary switch is for adjustment.

Inscriptions & markings

The main body is embossed with the following,'SIGNAL CORPS T-17-D CAAG 19332-PH-4422'. The rotary switch knob is embossed with the following, 'SW-217' and the symbol 'U' in a circle with a lightning symbol.