Kontrolpribor - Calculator - 1960-s - Circular logarithmic ruler KL-1 USSR

Kontrolpribor - Calculator - 1960-s - Circular logarithmic ruler KL-1 USSR #1.0
Kontrolpribor - Calculator - 1960-s - Circular logarithmic ruler KL-1 USSR #1.0
Kontrolpribor - Calculator - 1960-s - Circular logarithmic ruler KL-1 USSR #2.1
Kontrolpribor - Calculator - 1960-s - Circular logarithmic ruler KL-1 USSR #3.2
Kontrolpribor - Calculator - 1960-s - Circular logarithmic ruler KL-1 USSR #4.3
01
day
14
hours
58
minutes
35
seconds
Current bid
€ 21
No reserve price
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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Kontrolpribor Circular logarithmic ruler KL-1 USSR, a vintage plastic circular ruler from the 1960s in good condition with minor aging, weighing 58 g and measuring 50 × 50 × 5 mm, designed for multiplication, division, squaring, square roots and trigonometric functions.

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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.

There are micro-cracks on one side of the ruler. The box is damaged.

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.

There are micro-cracks on one side of the ruler. The box is damaged.

Details

Era
1900-2000
Title additional information
Circular logarithmic ruler KL-1 USSR
Material
Plastic
Manufacturer/brand
Kontrolpribor
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
1960-s
PolandVerified
787
Objects sold
100%
219
Reviews
Privatetop

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