Geodetic Rod

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Geodetic Rod

 

a metal rod 1-3 m long that gives a physical representation of an accepted basic unit of measure of length or its multiples. Since it is a standard measure of length, the geodetic rod is used to store and reproduce a linear measure of length and also to check and determine the length of working measuring instruments that are part of the set of basis instruments. End-plate geodetic rods were formerly used (the length of the measure was determined by the distance between the surfaces of its ends); modern geodetic rods are hachured (the length of the measure and its multiples or fractions are marked by appropriate hachures on the polished neutral surface of the rod).

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.