Saegmuller Attachment

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Article taken from "Backsights" Magazine published by Surveyors Historical Society


As seen in the engraving on the opposite page, it consists essentially of a small telescope and level, then telescope being mounted on standards, in which it can be elevated or depressed. The standards revolve around an axis, called the polar axis, which is fastened to the telescope axis of the transit instrument. The telescope, called the "Solar Telescope," can thus be move in altitude and azimuth. Two pointers, attached to the solar transit to approximately set the instrument, are so adjusted that when the shadow of the one is thrown upon the other the sun will appear in the field of view. -from A Treatise on Plane Surveying, by Daniel Carhart, C.E., NY: Ginn & Co., 1887. 

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