Hi, great timing I just purchased a Macbeth RD-519 densitometer on Ebay today and looking for the manual as well.
Originally Posted by luxikon
I did discover this link:
for the RD-519 that shows the manual as being the RD-514, RD 517 and RD-519. She is selling it though, it is not a download. I did download a few Macbeth manuals that are later models and can share if wished, it shows a complete calibration process, perhaps it could be used for general info and help with ours.
Anyway good luck and if I find it I'll post