Prior to making the
plot, I searched all my lighting texts for advice on numbering units using a
grid system, and the best (and only) advice I found was in Gillette, where he uses a system similar to yours - each pipe (both horizontal and vertical) has a letter, and then units are numbered sequentially upwards on that pipe - so "
Unit D4", "Unit D5", "Unit H14", and so on. But this just felt stupid to
me, because every
instrument that was on the intersection of two pipes could theoretically have two completely valid and completely different unit numbers. Unit C3 was next to Unit L7 which was next to Unit D1. It made no sense, and was impossible to figure out on the paperwork. Eventually I went with the "
Dimmer-Number-With-Letter-At-The-End" system which I described earlier, as that worked the best for me, but if I had a separate ME hanging my plot, I don't think that would have worked.
Thanks for the advice, I'm trying to make my plots as close to professional as possible for colleges to look at, and every little
bit helps a lot!