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Mechanical Protractor (30792301911) - Public domain map

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Mechanical Protractor (30792301911) - Public domain map

description

Summary

Cartographers used this device to draw or measure accurate azimuths (angles) from one point to another on a map projection that maintained true angles.

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Tags

cia
central intelligence agency
map drawing instruments
intelligence
maps
ultra high resolution
high resolution
technical drawing
date_range

Date

09/11/2016
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Source

Mechanical Protractor
link

Link

https://www.cia.gov/
copyright

Copyright info

Public Domain

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cia
cia
central intelligence agency
central intelligence agency
map drawing instruments
map drawing instruments
intelligence
intelligence
maps
maps
ultra high resolution
ultra high resolution
high resolution
high resolution
technical drawing
technical drawing