USSR SOVIET MECHANICAL CALCULATOR CIRCULAR SLIDE RULE POCKET TYPE english manual

Description

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Vintage Soviet pocket mechanical calculator circular slide rule 1960s
CCCP Счётная линейка (USSR Counting Ruler)
Logarifmicheskaya Linyeika
(
Logarithmic Ruler)
Description
2-17-07-21
Dear bidders, you are looking on RARE collectible - pocket mechanical calculator. Advanced mathematical operations: multiplication; squaring; division; finding of trigonometric functions of a sine; extraction of a square root; finding of trigonometric functions of a tangent; Finding inverse trigonometric functions; calculation of the area of a circle, etc. Year of production - 1967y. Body size - diameter is 50mm.(approx -2"). This item in very good cosmetic & working condition, comes with english manual(translation from original russian manual) . Superb item for collection !!! comes in original plastic box - cracked :-(
Feel free to email me any questions. Only serious bidders Please
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