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2. 2~4 measuring tapes: the measuring range can measure more than 7.5M (inclusive).
3. Site requirements: 12 meters long / 6 meters wide and open and the ground should be
relatively balanced (not on slopes or places with uneven ground).
4. Environmental requirements: The daily light brightness is the best, not under the sun or in a
dark place, otherwise it will affect the splicing.
5. The front and back calibration cloth should be parallel to the car. Use a ruler to measure the
distance between the two large cloths on the left and the front and the two large cloths on the
right. The error should be less than 2cm.
