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The design, construction and use of an automated system for mapping, measuring and analysing small areas of surfaces are described. A modified stylus instrument scans the workpiece in a number of parallel profiles, recorded on-line by a digital computer, which also controls operation of the instrument. The system can scan an area of up to 8 mm*8 mm in 2 h and record it as nearly half a million height readings. Examples of isometric and contour plots of recorded data are presented.
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Sayles et al. (1976) studied this question.
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