Yes ... I have an exposure chart that I "borrowed" somewhere along the way. Doesn't everyone?
I don't have it with me just at the moment, however.
Radiographers (used to) get taught this stuff, you know, Jandre! And I have yet to come across any (old school) radiographer who didn't have his or her own little notebook (traditional paper type, costing five
Riyals in the
souk) with factors, notes about positioning, phrases to use (when instructing, and/or reassuring the patient,
etc.) and all the rest.
In my humble opinion, any so-called radiographer who hasn't got the first clue about any of this stuff should not be allowed anywhere near the machine!

Meanwhile, can the guy
process radiographs (if, or when, he exposes some film)?