Align Projectors and Range check math

[dicewrench]

I've very carefully calibrated the projectors in Unity to 6" per band. But there's some magic numbers in the materials to make it happen... which likely get turned to halfs because that's faster for GPUs, and then floating point precision kicks in... So some amount of fuzziness is to be expected, but we're seeing like 0.1"-0.2" discrepancy which is a lot. I suspect the base math may just not match my table?

This is worth another look.