Two columns of readings, when measuring the corner of the wall, there is no need to bend the tape measure, and people do not need to bend over. Read the larger column directly (mark itself with the length of the tape measure box added)
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The ability to observe and perceive is great, and the idea is great. Is the performance ability is a little weak
When rendering, the camera is orthogonal, so there is no perspective in the perspective view.
Should still be a student = =
Red dots have had this concept for a long time.
The design shows that the picture of the tape measure is reversed?