MicroLinks UM12 - user manual - Manual (Page 53)

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53
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Non-Contacted (High Magnification) Non-Contacted (Low Magnification)
Fig.5-34 Non-Contacted
Based on the above steps it can measure horizontal and vertical scale.
EX: Measurement for non-contact object.
Use the “metal ruler” as a measurement base, the machine and the observation
object has distance, the focus of the video image is clear. Image shown in Fig.5-35
and Fig.5-36 is the result after measurement, horizontal and vertical scale range is
24.2mm and 18.1mm.
Fig.5-35 Horizontal scale range is
24.2mm
Fig.5-36 Vertical scale range is 18.1mm
9. Factors cause the inaccurate on the measurement
There are few factors could cause the inaccurate on the measured figures.
 The used ruler is not exactly accurate, for example, a metal ruler is not
accurate than a calibrator.