Circular Slide Rule. Wood. 1930's. Germany. K. Emil Tröger. Mylau

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Description

Rare circular slide rule. Germany (Mylau). 1930's.

K. Emil Tröger. Wood and lacquered celluloid.

Two scales (yellow and orange). Black arabic numerals.

Operations (division, multiplication, logarithms, trigonometric functions...).

Base in the back. German instructions. Rotating central scale. D.R.G.M. Stamp.

More information

Fine condition. Work without problems. Wear normal use for its age.

Dimensions: 14,5 cm diameter and 1,5 cm hight. Weight: 91 grams.

Antique office collectibles. Technical antiques. Calculators, slide rules and adding machines.

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