Titleaudio calculator & audio designers slide rule
ManufacturerAMPEREX ELECTRONIC CORPORATION
Dimensionsoverall: 1/8 in x 8 1/2 in x 4 1/4 in
DescriptionObject is a slide-rule calculator: front side audio calculator, back side audio designers slide rule.
Printed on the back side: Amperex Electronic Corporation, Semiconductor and Receiving Tube Division, Slattersville, Rhode Island 02876