Graphometer

Description
This graphometer belonged to the Engineering Societies' Library. Its semicircle is silvered, graduated to 30 minutes, numbered clockwise and counterclockwise. It is read by verniers at either end of the alidade to single minutes. There is a level on the alidade.
Location
Currently not on view
Object Name
graphometer
owner
Engineering Societies' Library
Measurements
overall: 9 in; 22.86 cm
needle: 2 1/2 in; 6.35 cm
ID Number
PH*319962
catalog number
319962
accession number
241593
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Surveying and Geodesy
Data Source
National Museum of American History, Kenneth E. Behring Center

Comments

Add a comment about this object