Im old school too. I used to have to use a tape measure to scale measurements on prints out in the field for 1/8 " and some used to be 3/32"(Jack azzes) scale off walls ect . Center off Concrete beams ect and center to center measurements.I'm old school bro. ¼" per foot on 8½"x11" paper. I'm an old man. I've had engineers come out multiple time and ask me, "what do you think will work?" I said 4"x12" headers downstairs and 4"x8" headers (beams) upstairs. 2"x6" studs 16" on center down stairs and 2"x4" studs 16" on center on the second floor. He went and drew the prints after we were framed. Passed every inspection.