Engineer Field Manual, Parts I-VI

Engineer Field Manual, Parts I-VI

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point used for a B. S. The plane of reference for each instrument station is the horizontal plane through the line of sight of the telescope, called height of instrument, (II. I.). A B. S. is a sight taken to a point of known elevation to determine H. I. Aanbsp;...

Title:Engineer Field Manual, Parts I-VI
Author:United States. War Dept
Publisher: - 1912


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