PyroGenesis Canada Inc (PYRGF)

[Tom Joad]

Just looked at the Pyrogenesis site again. That's the notation they use for tolerance.

Pyrogenesis powder tolerance

Like Beaver used to say, "Get's me." I have not yet found any reference in any engineering book, nor in any site on the web, nor in any mathematics book that agrees with what they're doing. All dimensions have to have a tolerance and the dimension is listed first, followed by tolerances.

I'll be happy to learn something new, however, I'll not bend so far as to agree, for instance, that the direction east is actually north.