Can anyone tell me anything about a vintage electronics multi tester model M3C made by Radio Kits Co.?

This is a multimeter that tests volts, ma, and ohms. It is average size though it's cabinet is made of wood with dovetailed corners. When I disembled it it had 3 Ray-O -Vac Pinlite batteries hard wired in it that said 15 cents each on them. On the face it says Radio Kits Co Multitester Model M3C. There is no other information avalaible.