KL-1

Slide-rule
Date of appearance: 1964
Manufacturer: Measurement 
Instrumentation Plant
Made in: Leningrad, USSR
Dimensions: 50 × 8 mm
Weight: 38 g
Tags: russiamakes, россияделаетсама, polytech, рдс, политех


Slide-rule, made by the Measurement 
Instrumentation Plant, Leningrad. This analogue measuring device was able to perform 
multiplication, division, exponentiation, square and cubic 
rooting, taking logarithms, etc. Such slide-rules were used 
by several generations of engineers and other specialists 
until electronic calculators became available.

KL-1
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