Chevrolet assembly plants

[Mr70]

It's a specialized tool known as a squaring jig,used to help speed up production during front sheetmetal alignment.You can just spy a guy holding an impact wrench down in the pit in the lower left,getting ready to secure the fender once the guy above gives the word.

[Keith Seymore]

Agree with "squaring fixture".

The only adjustment I would make to the previous comment is the guy in the pit is getting ready to shoot the radiator support bolts. The fenders are tight at the door and the fender nose bolts have been shot, but leaving the rad support bolts loose allows you to scoot the front end left or right to square it up.

Hopefully then when it's time to set the hood it goes right in there.

I stood and watched my guys do about 900,000 of those while I leaned on the foreman's desk. One every minute of every working day for about six years.

We didn't (usually) use the fixture, though. Typically those big tools are cumbersome and clunky and slow you down. They get used a little bit when new, and when management (or photographers) are looking, but quickly fall into disuse otherwise.

K