Instructions for Lasico Square Root Planimeter

Description
This four-page pamphlet shows model 125 of the Lasico square root planimeter, which sold in the 1940s for $135.00. It had a tracer point, unlike the later model 2000-V (2011.0043.01 and 2011.0043.02), which had a tracer lens. The pamphlet explains how to read the instrument and apply its readings to rate of flow calculations.
Reference: Lasico Mathematical Engineering Instruments (Los Angeles: Los Angeles Scientific Instrument Company, [1940–1945]), B-9.
Location
Currently not on view
date made
1940s
maker
Los Angeles Scientific Instrument Company
place made
United States: California, Los Angeles
Physical Description
paper (overall material)
Measurements
overall: 15.2 cm x 22.9 cm; 5 31/32 in x 9 1/32 in
ID Number
2011.0043.01.01
accession number
2011.0043
catalog number
2011.0043.01.01
Credit Line
Gift of Maximilian Berktold
subject
Mathematics
Engineering
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Planimeters
Data Source
National Museum of American History, Kenneth E. Behring Center

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