![]() According to the Odhner History, the model 39 was in production in 1944. A second mark there reads: MADE IN SWEDEN. A mark on the top of the machine reads: AKTIEBOLAGET (/) Original-Odhner (/) GOTEBORG SVERIGE. A bell rings when the result changes sign (negative to positive or positive to negative). A black plastic lever is next to the result register. Thin metal rods above the registers carry decimal markers. A crank with a wooden knob on the right side of the machine rotates clockwise for addition and multiplication and counterclockwise for subtraction and division. Metal buttons may be pushed down to move the carriage one unit left or right. Pushing down a lever at the front releases the carriage. Cranks at opposite ends of the carriage zero the registers on the carriage. The carriage at the front of the machine has eight windows for the revolution counter on the left and thirteen windows for the result register on the right. Digits inscribed on the frame next to the rotating pinwheels show the number set, as well as a set of windows above the pinwheels that shows these digits. Numbers are set by rotating the pinwheels forward, using levers that extend from the wheels. Original Odhner Calculating Machine Description This Swedish lever-set non-printing pinwheel calculating machine has a metal frame painted black, with eight metal pinwheels and a metal base.
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