Jump to content

Variscale

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Vsmith (talk | contribs) at 13:50, 31 August 2018 (ref). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

A variscale is variable length mechanical scale (ruler) designed to directly measure latitude and longitude on USGS maps.[1]

References

  1. ^ Roos, M., 1967. Variscale stereo point marking instrument, Photogrammetric Engineering, 33(11):1260-64.