Coordinatograph

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 It might be outdated or ideologically biased.

Coordinatograph

 

an instrument for plotting points on a map rapidly and precisely on the basis of their rectangular coordinates. It consists of a frame to which a ruler with divisions representing the axis of the abscissas is tightly attached. A carriage moves along the axis of the abscissas, carrying a ruler corresponding to the ordinate axis. A small carriage bearing a needle for punching holes moves along the ordinate axis. In addition, the automatic electronic coordinatograph has a computing device and control console. This system makes it possible to plot junction points and to automatically mark or cut the coordinate lines of the grid, using the results of computations of rectangular coordinates on the computing device.

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