Coordinatograph

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.

References in periodicals archive ?
Scher, and the instrument is a slave-operated coordinatograph.
spent his entire day for 25 years standing over that coordinatograph.
Led by Dean Edson, several RTS staffers began working on a prototype plotter that would use a standard rack-and-pinion Haag-Streit coordinatograph as the main building block for an automated, numerically controlled system for creating base map graticules on emulsion-coated Mylar sheets.
RTS staff modified the coordinatograph to accommodate "stepper motors" and a new precision gearbox that would drive and position the plotting head at the speed of 0.
In general, the machines were operated by the existing coordinatograph operators, although according to Edson, "it would almost be a demotion to be the operator .
Manual plotting and scribing of a standard USGS base map with horizontal pass-point positions requires from 8 to 12 hours of tedious work by the coordinatograph operator.
If the original operators of the coordinatograph were reassigned to other duties, and thus replaced by automated machinery, this would be substitution automation.
The A5 was modified to enable profile scanning and the concurrent cutting of the terrain model with a coordinatograph attachment to the A5.
The operator would move the floating point along a profile and adjust its height according to the altitude on the map as interpolated by the operator--a modification of the scanning and cutting technique described for the coordinatograph.

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