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Summary
Cartographers used these devices to aid in cutting or drawing parallel lines and aligning text. Because “VR” is marked on the base, we know this one belonged to Virginia Robinson, who served in OSS from 1942 to 1947.
Tags
cia
central intelligence agency
map drawing instruments
intelligence
maps
ultra high resolution
high resolution
musical instruments
Date
09/11/2016
Source
Rolling Parallel Rule
Link
Copyright info
Public Domain