beam is kept between the fourth line and the fifth line mark point, so that the
shadows coincide, as shown in Fig. 4-17.
Figure4- 17 Fast Calibration
The calibration is completed, and the result is shown in Figure 4-18.
Figure4- 18 Fast Calibration
① During the rapid calibration process, there should be no other mark
points near the calibration plate;
② Use the calibration plate to ensure that there are no other highly
reflective objects nearby;
③ After the calibration is completed, keep the calibration plate and
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