This part of ISO 1122 concerns the part of the
international vocabulary of gears which is devoted
solely to geometrical definitions.
It gives, for each of the geometrical terms relative to
gears, a standard definition which will be valid
internationally, the corresponding term in each
language being chosen as far as possible in such a
way as to directly reflect the meaning of the
NOTE — Since the choice of corresponding terms can
only be partially fulfilled in any particular language, due to
the necessity of respecting certain established
conventions, it is advisable, as far as translation into other
languages is concerned, to refer always to the meaning of
the definition itself, rather than to a simple transposition of
the original term.