Three-dimensional measurement is generally a contact measurement of three-dimensional dimensions, and the imager is an optical principal two-dimensional plane dimension.
I have seen the cheapest three-dimensional instruments in Zhengzhou, and the second-hand manual instruments cost more than 50 thousand.
Cameras are cheaper if operated manually, ranging from 50,000 to 60,000 to1-20,000 in China (excluding taxes and computers), depending on your budget and requirements.
They are all little dragon girls, and there is a big difference.