Don't think there is such an animal, as the fractional
dial indicators go 1inch per rev, and it would be sorta hard to put
1000 gradiations on a single rev
Most dial indictors/calipers with res to 0.001 go 0.1in per rev
John
On Mon, 05 Jan 2004 00:32:15 GMT, Sam <[email protected]> wrote:
>I just got a fractional dial caliper, not
>realizing it is accurate to .01 instead of
>.001 like my decimal caliper. Does anyone
>know of a source for one good to the nearest
>.001?
>Sam P.
They are always on eBay. Try a search there for "Dial Caliper"
"Sam" <[email protected]> wrote in message
news:[email protected]...
> I just got a fractional dial caliper, not
> realizing it is accurate to .01 instead of
> .001 like my decimal caliper. Does anyone
> know of a source for one good to the nearest
> .001?
> Sam P.
>
I remember reading an article a number of years ago, by the late Jim
Kingshott, one of the UKs leading woodworking gurus. He related his
experience as a apprentice patternmaker, where they were reqd to work to +/-
1/64". They had to bag their workpieces up in oilcloth overnight, because
they would vary by more than the tolerance next morning due to humidity
change.
Obviously accuracy is important, but we're woodworkers, not metal
machinists. If you're currently working to tolerances of +/-1/100", then
that's more than good enough for even the best quality joinery. If you're
aiming for an ultra-close fit on a particular component, then there's not
much wrong with the old way, where you made a component slightly oversize,
then hand-fitted it, rather than aiming for a good fit straight from the
machine.
Cheers
Frank
<Greg G.> wrote in message
news:[email protected]...
> Sam said:
>
> >I just got a fractional dial caliper, not
> >realizing it is accurate to .01 instead of
> >.001 like my decimal caliper. Does anyone
> >know of a source for one good to the nearest
> >.001?
> >Sam P.
>
> I don't know of one with english fractional markings - only decimal
> and metric. I don't know why it would really matter with wood,
> however. It expands, shrinks, and distorts WAYYY more than .001".
> That much accuracy would only depress you... <g>
>
>
> Greg G.
On Mon, 5 Jan 2004 11:11:07 +0000 (UTC), "Frank McVey"
<[email protected]> wrote:
>I remember reading an article a number of years ago, by the late Jim
>Kingshott, one of the UKs leading woodworking gurus. He related his
>experience as a apprentice patternmaker, where they were reqd to work to +/-
>1/64". They had to bag their workpieces up in oilcloth overnight, because
>they would vary by more than the tolerance next morning due to humidity
>change.
>
>Obviously accuracy is important, but we're woodworkers, not metal
>machinists. If you're currently working to tolerances of +/-1/100", then
>that's more than good enough for even the best quality joinery. If you're
>aiming for an ultra-close fit on a particular component, then there's not
>much wrong with the old way, where you made a component slightly oversize,
>then hand-fitted it, rather than aiming for a good fit straight from the
>machine.
>
>Cheers
>
>Frank
I try to work both ways. where I can, I get my setups accurate enough
to go straight off of the machine. where I can't, I leave enough for
hand fitting.
Bridger
On Sun, 04 Jan 2004 20:00:04 -0500, Greg G. wrote:
>Sam said:
>
>>I just got a fractional dial caliper, not
>>realizing it is accurate to .01 instead of
>>.001 like my decimal caliper. Does anyone
>>know of a source for one good to the nearest
>>.001?
>>Sam P.
>
>I don't know of one with english fractional markings - only decimal
>and metric. I don't know why it would really matter with wood,
>however. It expands, shrinks, and distorts WAYYY more than .001".
>That much accuracy would only depress you... <g>
>
>
>Greg G.
and besides, the dial would have to be pretty big to have room for all
of those numbers.
Sam said:
>I just got a fractional dial caliper, not
>realizing it is accurate to .01 instead of
>.001 like my decimal caliper. Does anyone
>know of a source for one good to the nearest
>.001?
>Sam P.
I don't know of one with english fractional markings - only decimal
and metric. I don't know why it would really matter with wood,
however. It expands, shrinks, and distorts WAYYY more than .001".
That much accuracy would only depress you... <g>
Greg G.
I have a s**tload of spare calipers, digital and vernier. Trust me, if
you want to use a .001 caliper, don't take the results TOO seriously. A
variation of a few thou sounds like a lot if your checking a board out
of a thickness planer, but in reality it's nothing to worry about. Temp
and especially humidity changes will effect your numbers. Chances are,
if you try to chase down those last few thou, it will be like watching a
dog chase it's tail. Mark
Sam wrote:
> I just got a fractional dial caliper, not
> realizing it is accurate to .01 instead of
> .001 like my decimal caliper. Does anyone
> know of a source for one good to the nearest
> .001?
> Sam P.
>
Enco or KBC tool about $25 for a 6".
Great for quick setups.
Wendell
"Sam" <[email protected]> wrote in message
news:[email protected]...
> I just got a fractional dial caliper, not
> realizing it is accurate to .01 instead of
> .001 like my decimal caliper. Does anyone
> know of a source for one good to the nearest
> .001?
> Sam P.
>