I do something similar with backing to the trailer, and loading the tractor on the trailer.
You need 4 reference marks - as fine as possible, yet visible - 2 in the garage and 2 on the truck.
2 points to a line, when both lines are lined up - only depth is an issue.
Maybe a windshield sticker - hole sight to hood ornament and then a hanging ball and a wall mark.
You need 4 reference marks - as fine as possible, yet visible - 2 in the garage and 2 on the truck.
2 points to a line, when both lines are lined up - only depth is an issue.
Maybe a windshield sticker - hole sight to hood ornament and then a hanging ball and a wall mark.