-40%

1968 Circular Slide RULE LOGARITHMIC KL-1 manual rules Moscow Soviet Russia USSR

$ 21.12

Availability: 100 in stock
  • Return shipping will be paid by: Buyer
  • Item must be returned within: 30 Days
  • Condition: Used
  • Refund will be given as: Money Back
  • All returns accepted: Returns Accepted
  • Restocking Fee: No

    Description

    Original Very rare Vintage Soviet Russia
    LOGARITHMIC Circular slide rule KL-1,
    1968, Past century, and included 2 more logarithmic rules.
    made in USSR -Soviet Union, Moscow.
    Diameter dial about 45 mm.
    Authentic! Made in USSR, 60s, Moscow.
    This rule is made by the Soviet Union control devices
    for the Ministry of Instrumentation of the USSR.
    Box. Manual.
    1.  Multiplication
    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 (of sines and tangents)
    8.  Calculation of the area of a circle
    The rule is in good Working Condition.
    Great item for the collectors,
    the perfect gift for scientists, mathematicians, students.
    Used. A condition on a REAL photo.
    Look at the ACTUAL photos!
    You receive what you see.