Skip to main content Smithsonian Institution

Catalog Data

Physical Description:
metal (edge, knobs material)
glass (coverpieces material)
paper (box, instructions material)
plastic (pointers material)
Measurements:
overall: 2.1 cm x 5.7 cm x 6 cm; 13/16 in x 2 1/4 in x 2 3/8 in
Object Name:
slide rule
Place made:
Soviet Union
Date made:
1967
Description:
This circular slide rule is the size of a pocket watch. It has a metal band around the edge and glass cover on the front and back. Each side of the rule has a pointer pivoted at the center, with its motion controlled by a knob along the edge. On one side, the outer edge is divided logarithmically from 1 to 100 and the inner edge from 1 to 10. Rotating the pivot allows one to find squares and square roots of numbers. The other side has a spiral scale on the inside that runs from 1 to 54 and appears to allow one to find tangents on the outer edge. It appears to have a scale of sines on the outside. The marks are in Russian.
A paper sheet of instructions accompanies the slide rule. The rule fits in a cardboard box.
Location:
Currently not on view
Subject:
Mathematics  Search this
Rule, Calculating  Search this
Credit Line:
Gift of Laszlo Kutor
ID Number:
2014.0136.01
Accession number:
2014.0136
Catalog number:
2014.0136.01
See more items in:
Medicine and Science: Mathematics
Science & Mathematics
Arithmetic Teaching
Slide Rules
Data Source:
National Museum of American History
EDAN-URL:
edanmdm:nmah_1464639