[dsraven]

I assumed your next step after the crisis checking would be to find your other points for body mounts, their dimension from the cab face. The bumper mounts or end of frame dimension plus width, the axle centerline, the horizontal drop from the main frame to the rad support and bumper mounts. Stuff like that. The trammel works great to set a dimension but first you gotta do some figuring. I usually make a sheet of figures to work from so I can quick reference.