RUSSIAN CIRCULAR SLIDE RULE (model KL-1) 1960's. USSR

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RUSSIAN CIRCULAR SLIDE RULE (model KL-1) 1960's. USSR:
$30.50

Banki_new Description:

RUSSIAN CIRCULAR SLIDE RULE(model KL-1) 1960-s

50 millimeters in diameter, The KL-1 is intended for

2.Division

3.Squaring

4.Extraction of a square root.

5.Finding of trigonometric functions of a sine

6.Finding of trigonometric functions of a tangent

7.Finding inverse trigonometric functions.

8.Calculation of the area of a circle.

TheRussian KL-1 is a circular slide done in a pocket-watch-like case. Thisone is from 1960-s as well. It has bakelite frame with chromed metalbezels. The crowns are also chromed meta and the dials are like a watchdial - painted brass. Despite the small size, the KL-1 is able tomultiply, divide, square and square root, sin, cos, tan, asin, acos andatan. That's really a "pocket computer" with just 5cm diameter.

The box has a crack.

Sliderule good working condition.

Pleasesee my other items on

Good vintage condition.

Greatopportunity for collectors!

For more info please see aactual pictures

Thanks for looking!!

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