Earth:Variscale
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Revision as of 03:37, 13 June 2021 by imported>SpringEdit (fix)
A variscale is variable length mechanical scale (ruler) designed to directly measure latitude and longitude on USGS maps.[1]
References
- ↑ Roos, M., 1967. Variscale stereo point marking instrument, Photogrammetric Engineering, 33(11):1260-64.
External links
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