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What is the difference between the “blue dot” and the “red dot” when measuring three axes using "Photographic Measurement"?
Due to the needs of the smartphone camera, laser, and related algorithms, no matter how the three axes you want to measure and display in the photo, you must also set the green point to the center point of the three axis, the blue point to the height, and the red point set to length / width to get the correct measured value.