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Title: Stereoscopic rangefinder-like instrument, apparently for mea [Go to resource]
Description: Stereoscopic rangefinder-like instrument, apparently for measuring the angle between two lines of sight, calibrated 15 grad left to 15 grad right, by Carl Zeiss, Jena, Germany, No.75487, also marked `F10x60' and `Nr 34', and with a German eagle symbol over a letter M License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Temporal: 1930-1949 Source: Science Museum Creator: Carl Zeiss Jena Identifier: 1995-95 Go to resource More Like this...
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