The target mark, a surveying device for surveying, was produced by the Swiss company for surveying instruments Wild (Heerbrugg) and was used for measuring angles and traversing.
Details
Title: Surveying device
Creator: Saarländisches Bergbaumuseum Bexbach, Staatskanzlei des Saarlandes Open Gallery
Subject Keywords: Das Erbe Kapitel 2 – Unter Tage
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