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Download "Intro to Coordinate Metrology" 
Suppose you need to know how far a specific feature of a workpiece
is from another feature (Figure 8). Take, for example, the distance to
the centers of each of four holes from a central hole. To do this you
would first measure the central hole, translate the origin to the
center of this hole, and then measure each of the four surrounding
holes. Moving the starting point (origin) of the measurement from its
present position to another place on the workpiece is called
translation. The CMM does this mathematically when you request an
alignment routine from it's geometric measuring software.
In terms of our street map, once you arrive at your hotel and decide
to eat at a legendary restaurant on your visit to the city, you need to
find it on the map. The hotel now becomes your new starting point, or
origin. By knowing your location, you can tell by looking at the map
that you will have to travel two blocks west along Maple Street to
reach the restaurant (Figure 6).
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Sheffield Measurement
a brand of Hexagon Metrology, Inc.
P.O. Box 1658
660 South Military Road
Fond du Lac, Wisconsin 54935
Toll Free Phone: 800.535.1236
Phone: 920.906.7700
Fax: 920.906.7701
info@SheffieldMeasurement.com
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