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
subject
Measuring & Mapping
Surveying and Geodesy
See more items in
Medicine and Science: Physical Sciences
Surveying and Geodesy
Data Source
National Museum of American History, Kenneth E. Behring Center

Visitor Comments

Add a comment about this object

**Please read before submitting the form**

Have a comment or question about this object to share with the community? Please use the form below. Selected comments will appear on this page and may receive a museum response (but we can't promise). Please note that we generally cannot answer questions about the history, rarity, or value of your personal artifacts.

Have a question about anything else, or would you prefer a personal response? Please visit our FAQ or contact page.

Personal information will not be shared or result in unsolicited e-mail. See our privacy policy.

Image CAPTCHA
Enter the characters shown in the image.