Fred Jaggi contributed:
>
>These days this type of measurement is done by laser and the measuring
>machines are much simpler. See for example:
>http://www.brownandsharpe.com/
A fascinating link, especially for me the history of Brown and Sharpe.
We owe so much to such pioneers of precision.
Tha
There's an excellend discussion and description of
a measuring instrument made by the Moore Special Tool co. which is accurate to
0.1 second of arc. See the book: "Foundations of
Mechanical Accuracy" by Wayne C. Moore published by the company in Bridgeport
CT. in 1970. See:
http://www.thomas
named, "Blackwells" claims to have a new copy. I sent them an
on-line order, received an acknowledgment, received confirmation of
charging my credit card and then received a curious email explaining
that shipment would take 30 days, based on average response from the
publisher. I don't unders
