"DoN. Nichols" wrote in message
...

Very good description!

I've memorized the decimals down to 16ths but the simple approach is
to hang a decimal equivalents chart near the machine, as it also gives
the nearest fractional or metric collet size to your workpiece
diameter and shows english-metric equivalents.
http://cdn.mscdirect.com/global/imag...651680A-11.jpg
jsw