Accession Number : AD0780859

Title :   Comparison of the Stereotopograph and the K.E.K. Plotter,

Corporate Author : ENGINEER BOARD FORT BELVOIR VA

Personal Author(s) : Locke,William J.

Report Date : 15 SEP 1947

Pagination or Media Count : 55

Abstract : The report covers the tests and investigations conducted by the Engineer Research and Development Laboratories in order to evaluate the stereotopograph as an instrument for plotting maps from aerial photographs, and to compare its accuracy with that of an improved model of the K.E.K. plotter. Comparative tests were conducted by preparing a topographic map with each instrument and comparing the accuracy of this map with a map of the same area prepared with multiplex. Further tests on the stereotopograph to determine the maximum accuracy attainable under favorable conditions of photography and ground control were conducted. These tests consisted of plotting an area with the instrument using control data derived from a multiplex plot and comparing the resultant map with a map of the same area prepared by multiplex.

Descriptors :   *Stereoscopic map plotters, *Topographic maps, Aerial photographs, Photogrammetry

Subject Categories : Cartography and Aerial Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE