Check turned parts.
Optical inspection of turned parts--either in a lab or on the shop floor--can be performed by the Helio-Scope from Mahr Federal (Providence Providence, city (1990 pop. 160,728), state capital and seat of Providence co., NE R.I., a port at the head of Providence Bay; founded by Roger Williams 1636, inc. as a city 1832. , RI; www.mahr.com). The system, which uses a CCD camera See digital camera. , can measure parts up to 750 mm in length, 120 mm in diameter diameter - The diameter of a graph is the maximum value of the minimum distance between any two nodes. , and up to 30 kg in mass. It can resolve lengths and diameters up to 0.0001 mm and angles up to 0.0001[degrees]. Measured characteristics include lengths, intersections, run-out, roundness, part axis pitch, diameters, radius, and other features.
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