A.T. Kott wrote:

The last project I did drawings for involved brass models made in China. I provided scale drawings (not RR general arrangement drawings that are seldom to scale) with a few measurements on them . . .

I can't speak for many railroads' practice, but the SP, UP and PFE general arrangement drawings I have seen are most certainly scale drawings, as one can verify by checking details, and are quite carefully done. The good Mr. Vlk referred to them as "cartoons," and perhaps on some railroads that was true, but certainly not for the examples cited.

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