Haha! The difference between the words downstairs is that I am in this field. The full name is called 3D photogrammetry system. This is just a set of hardware. The main reason is that the software behind it is valuable. It can assist the white light scanner to measure large objects, such as 2 meters to 10 meters. Multi-meter, because the white light scanner will accumulate errors when it measures a certain size, it can reduce this accumulated error.

This thing cannot be used alone (it can also be said that if it can be used, it is only limited to a small area). The camera is a SLR and can be played with after buying it (just kidding)