"Wes" wrote in message
...
For something like a taper for a R-8 or MT 4 1/2 or 5C or MT 3 what kind
of
tolerance in inch per foot is considered reasonable?

My son just showed me the official engineering symbol for this. Make two
large UU connected together. Then put an arrow through it ---. The term is
called, "dead nuts", VBG

karl