Twin low-oblique photography and the Twinplex plotter, prepared by the Topographic Division, Research and Technical Control Branch, Section of Photogrammetry.

By: Material type: TextTextSeries: Geological Survey circular ; 222Publication details: Washington, 1952.Description: iii, 18 p. illus., diagrs. 27 cmSubject(s): DDC classification:
  • 526.91 526.98*
LOC classification:
  • QE75 .C5 no. 222
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"The text of this circular is an adaptation and combination of the following papers: 1. Hopkins, B. T., 1951, The Twinplex plotter for low-oblique photography. [Unpublished] 2. Radlinski, W. A., 1952, Convergent low-oblique photography and its application to the Twinplex: Photogrammetric engineering, v. 18, no. 3, pp. 596-597. 3. Thompson, M. M., 1950, the Twinplex, a new stereoplotting instrument; U. S. Geological Survey Circ. 82."

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