Gutsevich's Counting Device

Counting device
Date of appearance: 1892 — 1893
Made in: Saint Petersburg, Russian Empire (now Russia)
Weight: g
Tags: russiamakes, россияделаетсама, polytech, рдс, политех

The device is designed to perform multiplication and division, it has two logarithmic scales. The total length of scales amounts to 20,7 m that allows to perform calculations with an accuracy of up to five digits. Only one model exists, it was never produced commercially. Added to the collection of the Polytechnic Museum in 1952. Before that it was a part of the "socialist accounting" exhibition.

Gutsevich's Counting Device