NavList:

   

Reply

Frank-

Perhaps "heavier" is a confusion with 'denser' materials, which might have
greater thermal mass and as such change their dimensions more slowly when
heating and cooling?

I realize density and thermal stability are not directly dependent, but in the
typical cases of "brass" versus "aluminum" versus "plastic", as you move from
heavier to lighter materials in these three, aren't the heavier materials of
these three also less likely to change during slight heat changes? (i.e. to give
a misleading appearance that the heavier sextants were therefore more accurate.)

Urban myths get off to great starts for lesser reasons.

   

Reply