Accurate Enlarging?

[abknight@zzzzzz]

Hello All,

Is there anyone who might point to a good book which would enlarge my
understanding of scaling up?

I have to make an enlargement of a complex figural maquette and I have
devised measurers that give numerical x y z coordinates for any point; the
length of the units of measurement on the respective measurers are at the
variance to create the desired change in scale.  But it is not accurate in
the way a fixed one to one pointing system is.  Is there a more accurate
machinery for enlarging?  I have heard of a pantograph, but don't really
know what it is; it sounds two-dimensional.

Does Gabriele Rovai's book, Il Mestiere del Marmista offer such information?
Or her other book, Dall 'Argilla al Marmo?  Or any other book?

Perhaps enlarging is just not a perfect science.  I would go full size with
the maquette were I to go round again.

Is anyone else out there worried about just exactly where the chin dimples
and elbow bumps are?

Thank you,

Bill