Photo courtesy of OSX, https://commons.wikimedia.org/w/index.php?curid=12890947
In the 1982 blockbuster E.T. the Extra-Terrestrial, Elliott utters the memorable line, “One thing. I have absolute power. Say it,” just before he introduces E.T. to his brother Michael. Car makers are also asking for accurate absolute measurements, especially when it comes to Body in White (BIW) assembly.
According to Wikipedia, "Body in white or BIW refers to the stage in automobile manufacturing in which a car body's sheet metal components have been welded together. BIW is termed before painting & before moving parts (doors, hoods, and deck lids as well as fenders), the engine, chassis sub-assemblies or trim (glass, seats, upholstery, electronics, etc.) have been assembled in the frame structure." As you can see, BIW involves many parts, and metrology plays a key role.