Calculator - 1966 - Circular logarithmic ruler KL-1 USSR

Calculator - 1966 - Circular logarithmic ruler KL-1 USSR #1.0
Calculator - 1966 - Circular logarithmic ruler KL-1 USSR #1.0
Calculator - 1966 - Circular logarithmic ruler KL-1 USSR #2.1
Calculator - 1966 - Circular logarithmic ruler KL-1 USSR #3.2
Calculator - 1966 - Circular logarithmic ruler KL-1 USSR #4.3
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Starting bid
€ 1

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Francisco Álvarez
Expert
Selected by Francisco Álvarez

Acquired extensive antiques knowledge through renovation works and running own antiques shop.

Estimate  € 100 - € 150
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Description from the seller

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 and Measuring Instruments "Kontrolprilad".

The set includes a ruler, a box and instructions in Russian.


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 and Measuring Instruments "Kontrolprilad".

The set includes a ruler, a box and instructions in Russian.


Details

Era
1900-2000
Title additional information
Circular logarithmic ruler KL-1 USSR
Material
Metal, Plastic
Style
Vintage
Condition
Good condition - used with small signs of aging & blemishes
Height
5 mm
Width
50 mm
Depth
50 mm
Weight
58 g
Estimated period
1966
PolandVerified
787
Objects sold
100%
219
Reviews
Privatetop

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