Electronic Digital Calipers - recommendation please.

[jalan01]

http://www./itm/Moore-and-Wright-M11...YAAOSwBLlU-gaF aboslute zero facility too..

[jack-daniels]

http://www./itm/Moore-and-Wright-M11...YAAOSwBLlU-gaF aboslute zero facility too..

Item Number 251869006473 on E bay

[jalan01]

Item Number 251869006473 on E bay

correct.. thank you dunno why my link din't work..

[jack-daniels]

correct.. thank you dunno why my link din't work..

No e bay links allowed on here!

[MikB]

Item Number 251869006473 on E bay

Yep, that's the model I have, and it agrees with my Mitutoyo mic to the nearest 0.0005" on every trial I've made.

It's good enough for 95% of what I do, and has been my gauging workhorse for about a year now.

What's also nice is that inside and outside jaws agree, too - a 25,00 shaft fits a 25,02 bore just as tightly as I'd expect.

Apart from the display going a bit dim, it also works in a freezing outside workshop.

I've once needed to adjust the vee-setting screws to take up a bit of play I noticed.

Regards,
MikB

[Randy Bohannon]

I picked up a cheap digital calliper when I first started reloading but over time noticed a variation of around 5 thou on occasion randomly between uses. I picked up on it because of a reference round that I had loaded to set seating dies for mature loads. I would measure the length to the ogive each time and make a note of it as I was paranoid that screwing the seating stem of the die in too hard would make the referee bullet shorter over time. I found that the length did vary occasionally but always by 5 thou in one direction or the other. It may have been rf interference, it may have been poor circuit desiGn leading to variable zero, sensitivity to battery voltage, I don't know in short.

i ordered a mitutoyo dial calliper and have not seen any variance in the reference rounds since.

i vote for non electronic calliper for reliability and repeatability.

[MikB]

I picked up a cheap digital calliper when I first started reloading but over time noticed a variation of around 5 thou on occasion randomly between uses. I picked up on it because of a reference round that I had loaded to set seating dies for mature loads. I would measure the length to the ogive each time and make a note of it as I was paranoid that screwing the seating stem of the die in too hard would make the referee bullet shorter over time. I found that the length did vary occasionally but always by 5 thou in one direction or the other. It may have been rf interference, it may have been poor circuit desiGn leading to variable zero, sensitivity to battery voltage, I don't know in short.

i ordered a mitutoyo dial calliper and have not seen any variance in the reference rounds since.

i vote for non electronic calliper for reliability and repeatability.

As someone else remarked - none of us can tell others how to do it, only how we do it...

[xbow]

If I'm doing work on the Lathe that requires an accurate fit I use a Micrometer. For most of my work a 0-25mm is used but I do have a 25-50 as well. You can get good makes on the bay for little cost these days. I got an unused Mitutoyo a couple of years back for about £20.

[CapnBall]

I love the old English made Engineer's Micrometers such as those made by Moore & Wright. Frankly being given away on fleabay at times. Best of British and bloody fabulous. Stink of that days of our best times, I am starting to collect tem in their own right !

Had 2 new digital sets, tbh they didn't last long, but I did spend less than £20.

A 'V-Angle' Micrometer would be handy if you wish to measure bore-slugs that that have odd number of groove-land, eg 5

[Randy Bohannon]

As someone else remarked - none of us can tell others how to do it, only how we do it...

Absoultely Mik, if I knew enough to get a decent pair like the one's you have no doubt my view would be different.

[MikB]

Absoultely Mik, if I knew enough to get a decent pair like the one's you have no doubt my view would be different.

Well, I happened to be around in about '76 - '77 when the dial caliper thingys first hit the machine shops. They were the best things since sliced bread for a couple of months, then they started skipping teeth on their gears and everyone went back to Verniers and mics, cursing Mitutoyo (IIRC) under their breath. I'm afraid that soured my view permanently - possibly unfairly.

The fact that people are still buying them suggests things have improved mightily - but you don't forget how to read Verniers and mics and there's very little to go wrong without it being obvious if you know how to use them properly.

I was mistrustful of my first 2 digital calipers; they weren't as good as Vernier and mic and failed after a few months - but I think the M&W ones now represent a mature technology.

So far at any rate...