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Published on Apr 15, 2010
This video shows a brief accuracy/repeatability test by probing the tip of a Starrett 0.001" dial indicator. The robot used in the video is a Fanuc ArcMate100i (aka. Fanuc M6i) which have a reach of approximately 4.5 feet (1.3 meters).
Each number on the indicator denotes 0.001" (0.025-mm). The indicator's small tick marks represent 0.0001" (0.0025-mm).
This is by no means a scientific test, but it does show a ballpark of how accurate these robots can position their tool center point during critical moves.