Welcome to the page of my shop. Here offered the next lot. Vintage Russian Circular Slide Rule!
It was made in 1960s by the Moscow control devices for the Ministry of Instrumentation of the USSR. Overall SLIDE RULE condition is very good for it's age - please, check the actual photo! «KL-1» is intended for implementation most of often meetings in practice mathematical operations. Extraction of a square root.
Finding of trigonometric functions of a sine. Conversion values, such as currencies, distances, weight.
Finding of trigonometric functions of a tangent. Finding inverse trigonometric functions (of sines and tangents). Calculation of the area of a circle.
I send my items Worldwide. Be ready for these terms. All items will pack very securely, to fully ensure that - the item arrives safely.If you received your item and it not as described or other problem - please immediately contact with me! I will try do everything we can to I help you and resolve situation. The item "Vintage Soviet circular slide rule KL-1 USSR Calculator Mathematical instrument" is in sale since Thursday, April 23, 2020. This item is in the category "Collectibles\Science & Medicine (1930-Now)\Engineering\Slide Rules". The seller is "yagol_36" and is located in Kharkov. This item can be shipped worldwide.