I need to buy a digital micrometer that will read in gauges.
Harriet, I've never seen a digital (or analog) guage calibrated in
traditional guages. I've two suggestions. One would be to do as many
smiths working in gold or platinum end up doing, learn to work in
millimeters. As a measuring system, It makes a lot more sense, is
then consistant with the measurements used for stones, and all in
all will end up making your life easier. Many of the rolling mills
today have adjustment dials calibrated in millimeters in any case, so
learning to work with that system of measurement will just make your
life simpler. Plus, I'd point out that if you're rolling your own
sheet, you've no real reason to be making any one specific guage just
because that's some decided upon number. make your sheet the
measurement you need, even if that happens to fall between guages.
Working with millimeter measurements, such adjustments are automatic
and intuitive. With the guages, they're not always so. There's
often a bit too much difference between guage numbers for comfort, in
some types of work.
But if you must have an accurate guage to read B&S guages, I'd
suggest rather than a digital instrument, get a decent dial type
caliper. this can also include the types sold for pearl
measurements, or the leveridge style guages. With these, you could
simply mark the additional on the appropriate spots on
the guage face with a marker, or if you like, open the front cover
of the dial and mark the dial face itself. then you'd have a custom
caliper to do what you need. You might also check the presidium
version of the leveridge guage. I have a dim memory that it does
more than just millimeters. might do metal guages or some such too.
but i'm not sure of that.
Easiest of all would simply be a nicely large type chart of guages
and their millimeter equivalents. The trick would be to make it on
graph paper, with a linear measurement in millimeters along the
graph, with the B&S guages arranged along it. This way, you start
with the digital millimeter guage measurement, look at the chart, and
not only can see where it relates to the B&S guages, but since the
chart is linear for the millimeter measurements, you get a visual
clue as to where you are between guages, and how much further to
roll, etc. And once you use that chart for a while, you'll soon
learn to be more comfortable with just remember which millimeter
measurements you need in the first place, bring you to my first
suggestion, skip the guage numbers altogether (grin)