RCA Victor AP-1249 Radio Time Switch

This is a model AP-1249 timer unit sold by RCA Victor in the early 30's.  It was used to turn a radio or other appliance on and off at preselected times.  The two knobs at the bottom set the on and off times, and the knob in the center of the clock face sets the clock itself.  Just below the two knobs is a lever which allows manual control of the internal switch.  The clock mechanism was made by Telechron, and is basically an oven timer with a wood case more appropriate for the living room than the kitchen.