Mechanical Dashed Line Instrument (30792308421)

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Mechanical Dashed Line Instrument (30792308421)

description

Summary

The three notched discs and a drafting pen mounted on the spring-loaded base created different dash-line patterns for boundary, road, river, and other linear map symbols.

label_outline

Tags

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

Date

09/11/2016
create

Source

Mechanical Dashed Line Instrument
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