RE: Quarter Scale Dragster
That's right, I have a wooden box fits around the car (lines up with marks on the floor)
The pointers tips match up with 2 x tape measures that are on the top edges of the box.
This way, when I tighten the rear chains, I can be sure the axle is straight (perpendicular to my Centre line)
Hopefully this way it will go in as straight a line as possible when driven