Grab yourself a bit of history! It is extremely rare even in the ex-USSR countries.(new old stock) , the quantity is limited! Made in Russia (Soviet Union period). A Russian circular slide rule built like a pocket watch that works as s. Ingle cursor slide rule since the two needles are ganged together. It can be used for the designated purpose or even to become addition of your collection. (in original box + original with instruction in Russian). (Manual in English NOT ORIGINAL). Manual in English and in Russian included. RUSSIAN CIRCULAR SLIDE RULE (model KL-1) 1960's.
50 millimeters in diameter, The KL-1 is intended for. Performing trigonometric and mathematical operations. Extraction of a square root.
Finding of trigonometric functions of a sine. Finding of trigonometric functions of a tangent. Calculation of the area of a circle. We always act with integrity.
Grab yourself a bit of history. I describe items to the best of my ability and mention any defects. Describing item(s) and their condition is.
A matter of individual / personal opinion. Included in the listing and the overall condition.All of the items we sell are second hand / Vintage / Antique and used , so please check the photos before purchasing as these form part of the description. Colors may be vary different between CRT and LCD screens. Since computer screens have chromatic aberration. We can not guarantee that the color of our products.
Will be exactly the same with the photographs. We use recycled packaging where possible to help save the planet. Before paying please make sure that your address is current and complete.
/ when it is possible and depending on the weight /. Thanks for your patience& understanding& time!
Don't open the dispute in. We also expect your positive 5-star feedback after you receive your item. PLEASE DO NOT FORGET TO GIVE US YOUR FEEDBACK. YOUR FEEDBACK IS GREATLY APPRECIATED. The item "NEW Soviet circular slide rule USSR 1969 Calculator Mathematical instrument KL 1" is in sale since Wednesday, November 27, 2019.
This item is in the category "Collectibles\Science & Medicine (1930-Now)\Engineering\Slide Rules". The seller is "lialyes" and is located in Europe. This item can be shipped worldwide.