Nr. 99065248

Kontrolpribor - Regnemaskine - 1967 - Cirkulær logaritmisk lineal KL-1 USSR
Nr. 99065248

Kontrolpribor - Regnemaskine - 1967 - Cirkulær logaritmisk lineal KL-1 USSR
Circular logarithmic ruler "KL - 1" is designed to perform mathematical operations of multiplication, division, squaring, obtaining the square root, finding the trigonometric functions of sine, cosine, tangent, as well as inverse trigonometric functions, finding the area of a circle.
Manufacturer: Moscow Scientific and Industrial Plant of Control Instruments "Kontrolpribor".
The set includes a ruler, a box and instructions in Russian.
There are small scratches on the ruler.
The box is wrapped in film.
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