I do agree that stipulating a heavy engineering operational instruction in ppm is almost deliberately making things difficult. But we can extend our discussion of "cheap" to the maintenance manual production, where once upon a time a professional in house technical documentation author would never have simplistically written it like that. Instead outsource the production, again to the low bidder, and they will just whack in the product manufacturer's spec sheet without consideration.
Steve Jobs, when he led Apple Computers, had a "thing" about simple and straightforward. The first demonstration of any major new product was to him. If there even one ambiguous or surplus operation (in his mind) he used to blow up the team members there and then, who thus knew to take infinite care to get it all the best that could be done. This additive instruction would absolutely fail the Jobs test - complex calculation not explained, technical abbreviation not explained, abbreviation not commonly used elsewhere (otherwise the operative would be familiar with it), abbreviation of something not in the operative's own language, etc.
Last edited by WHBM; 24th Apr 2020 at 09:59.