How to measure a vehicle with a high accuracy with mm?

[absoltue_beginner]

@jremington

Indoors, this is difficult and expensive. Options range from ceiling mounted (and wall, for 3D coordinates) cameras connected to a PC doing image processing, to the commercially available Pozyx system. https://pozyx.io/

Outdoors and also expensive, use RTK GPS, such as C93-M8E | u-blox

okay, got it. with camera could be an option for me.

I have a great idea... but I must think about it carefuly