nice work and cool layout with some interesting features.
bummer about the scan,
alternatively I have done a pure measure and draw into CAD and then print (have a small rule printed in the print as a scale check) in tracing paper and then do a overlay check - a little time consuming but once you get in the swing of it measuring from the left side and bottom side for every item keeps it consistent. and then a photo like how toyotaboy suggested as a layer to toggle off / on.
Great to see you're enjoying Pinside! Did you know Pinside is able to run thanks to donations from our visitors? Please donate to Pinside, support the site and get anext to your username to show for it! Donate to Pinside