HVL ... Half Value Layer.
Collimation is also important (but sometimes overlooked).
Fluke test kit (see also
RaySafe).
Radcal.
RTI.
How about:- step wedge, spinning top - oh sorry, that was a "flash-back" from the simpler times of a bygone era. But anyway, here's hoping your test equipment budget is healthy, Phil.
FDA (see also
Frank).
