Re: Boring a hole question...

On Sat, 01 Mar 2008 10:07:11 GMT, with neither quill nor qualm,
"Harold and Susan Vordos" <vordos@xxxxxxx> quickly quoth:


"Mechanical Magic" <google@xxxxxxxxxxxxxxxxxxx> wrote in message
news:36911538-f679-455e-803e-ec99c9acd5af@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
snip----

Where I disagree: measuring a smallish hole with calipers. To suggest
that +-.005" is to be expected, is leading the inexperienced down the
wrong path. I have tried all my calipers with a .2000" ring, and they
ALL read a smaller diameter, by different amounts. I don't believe a
hole measurement to within .010"

Dave

Grin!

I was trying to avoid an ugly confrontation with those the seem to think
that a caliper, particularly a digital, is the ultimate in precision. I've
had conversations with such individuals, and they rarely will be denied
their opinion. What fools they are. I have used a decent scale
(Starrett C305R) with as much precision as I've achieved with calipers.
I use them only when it clearly does not matter. They're great for checking
the size of raw stock.

Aw, 'Arry, you're just being fussy. Measure with a micrometer, cut
with a hacksaw, grind to size, hammer to fit.

--
An idealist believes the short run doesn't count. A cynic believes
the long run doesn't matter. A realist believes that what is done
or left undone in the short run determines the long run.
-- Sydney J. Harris
.

Relevant Pages

  • Re: Cheap drill bits vs good once
    ... I have found that the secret to using calipers ... dimension of +.0011 is out of tolerance. ... only five tenths, they'd probably tell you +.001" which would be wrong. ... your measuring instrument should be ten times more accurate than ...
    (rec.crafts.metalworking)
  • Re: used mill
    ... Measuring is the basis of precision. ... You need to make a snug slip fit for two components. ... Calipers are rarely, if ever, in sync., inside versus outside measurements. ... The level of precision required to get both sets of jaws in perfect ...
    (rec.crafts.metalworking)
  • Re: Boring a hole question...
    ... measuring a smallish hole with calipers. ... some of it for making the weights was a great idea. ...
    (rec.crafts.metalworking)
  • Re: Boring a hole question...
    ... You're joking about using calipers to verify your readings, ... Aside from dial bore gauges, or inside mics, there's nothing quite as ... the same level of "feel", practice, and calibration of the measuring ...
    (rec.crafts.metalworking)
  • Re: Whens the best time to measure body fat?
    ... One day my body fat may be 18.5% and I'm ... >>>weirdness in whatever algorithm they use to estimate muscle mass. ... >> "Body fat measuring is notoriously inaccurate and should never be ... >calipers in my informal tests and a lot quicker and easier to use. ...
    (misc.fitness.weights)
Loading