Starrett #123 26" Vernier Caliper

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revrnd
Posts: 353
Joined: Sun Dec 18, 2011 10:38 pm
Location: Ontario, Canada

Re: Starrett #123 26" Vernier Caliper

Post by revrnd » Tue Sep 17, 2019 8:39 pm

Harold_V wrote:
Sun Sep 23, 2018 4:34 am
Are you sure it measures 26"? The scale on a vernier is longer than the capacity, as there must be a place to the right of the jaws for the vernier scale. I suspect what you have is really a 24".

In Starrett's example, I think you'll find that the vernier scale is divided in 50's, (not 25's), so the scale is longer, which would account for the extended length. In satin chrome, they're very easy to read.

H
Sorry about disappearing and yes, you are correct. I hadn't thought of the extra length req'd.

whateg0
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Location: Wichita, KS

Re: Starrett #123 26" Vernier Caliper

Post by whateg0 » Wed Sep 18, 2019 8:41 am

Harold_V wrote:
Mon Sep 24, 2018 3:20 pm
Exactly. I don't understand the obsession with digital stuff. If you're at the mercy of a battery, and you don't happen to have a spare, you're dead in your tracks until you do. That would be a deal killer for me, as it's a 25 mile drive to the small city where we do our shopping, with almost nothing at our disposal any closer. Add to that the fact that I am a night person, so I spend a lot of my time awake while others are sleeping, and an issue such as that would be a show stopper.

I was trained to work with vernier scales and dials. I'm not suggesting, not for one moment, that anyone who doesn't is doing anything wrong, but I'm very pleased that I learned to do things the "hard way". So long as I have electricity, I can operate my equipment without fearing failure of electronics (everything but my Haas mill, which just happens to be down, thanks to electronic failure).

H
I don't think for most it's really an obsession. It's just faster most times than reading a vernier. It's also less prone to human math errors since a delta measurement is just a button press away. It's also less prone to human error in reading the numbers. That's not to say that errors don't occur; they are just less common. I still have dials and verniers in the drawer and usually prefer dial to digital, but if I'm doing a bunch of relative measurements, I jump right to the digital stuff.

Dave

Mr Ron
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Location: Vancleave, Mississippi

Re: Starrett #123 26" Vernier Caliper

Post by Mr Ron » Wed Sep 18, 2019 12:36 pm

To me, a vernier reading caliper will always give me a TRUE reading that I can trust. With digital measuring instruments, I never know for certain the reading is accurate or if an electronic glitch has rendered a false reading. I have a Mitutoyo digital caliper and although I use it all the time, I still double check with my vernier instrument. When using the digital caliper, I always remember to clean the jaws of any dust or particles that may give a false reading. I also do the same with a vernier instrument.
Mr.Ron from South Mississippi

armscor 1
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Re: Starrett #123 26" Vernier Caliper

Post by armscor 1 » Wed Sep 18, 2019 4:51 pm

Opened the box of my Mitutoyo 8" Digimatic Absolute Vernier which I rarely use yesterday and found the screen has gone dark.
Opened the battery compartment and the battery has leaked destroying the internals.
Priced a new one, $230, can't justify buying one at that price, back to the old trusty mechanical vernier.

pete
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Re: Starrett #123 26" Vernier Caliper

Post by pete » Thu Sep 19, 2019 2:06 pm

I figure for most with a home shop a 6" set of calipers is likely the most used measuring instrument to get you close before better and more accurate methods are used when needed. While I've got very good 6" & 12" dial calipers I finally bought what I should have to begin with. A set of there solar powered digitals. Hands down the smoothest and most repeatable set of calipers I've ever used and no battery to die even though there battery life is extremely good. Mitutoyo do sell replacement parts, and I seem to recall they also sell the fully assembled screen component. I've no idea of the current price, but it might be worth checking with them Armscor. I don't think replacing that part is all that tough.

Fwiw I've yet to ever see even one single glitch or incorrect reading with any of my Mit digital equipment and I have quite a bit of it Ron. Even if I had a good vernier caliper I'd feel no need to double check any reading there digital calipers are giving me. I feel more than confident there well under .003" and quite likely very close to being within .001" for average repeatability since I've checked them and myself against random gauge block sizes.

armscor 1
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Re: Starrett #123 26" Vernier Caliper

Post by armscor 1 » Thu Sep 19, 2019 5:11 pm

Just checked mitutoyos website and they list the Module but most of the description is in Japanese so no luck.
The module/ display is for a Code No 500-172, Mod No CD-8" C.
I tried changing the module from my late model 6" but it returns an error, suspect my early model uses a different system for the scale

pete
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Re: Starrett #123 26" Vernier Caliper

Post by pete » Fri Sep 20, 2019 5:22 pm

For an older design digital display you just might be out of luck Armscor. However I'd still try an email to one of the Mitutoyo repair departments giving the model number of your calipers. If anyone knows if spare and compatible parts are still available they would.

RMinMN
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Joined: Tue Jan 02, 2018 8:50 am

Re: Starrett #123 26" Vernier Caliper

Post by RMinMN » Fri Sep 20, 2019 6:24 pm

armscor 1 wrote:
Wed Sep 18, 2019 4:51 pm
Opened the box of my Mitutoyo 8" Digimatic Absolute Vernier which I rarely use yesterday and found the screen has gone dark.
Opened the battery compartment and the battery has leaked destroying the internals.
Priced a new one, $230, can't justify buying one at that price, back to the old trusty mechanical vernier.
My eyesight won't let me use a vernier caliper anymore so I use digital. Take a look at a comparison between Mitutoyo and a cheap one.

https://www.youtube.com/watch?v=HpGUOTVBZ3c

The battery on a Mitutoyo will last for 3 years. The cheap one needs its battery replaced at least once a year.

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Lew Hartswick
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Location: Albuquerque NM

Re: Starrett #123 26" Vernier Caliper

Post by Lew Hartswick » Wed Sep 25, 2019 9:19 am

Old Pierre Vernier 1580 - 1637 would be roiling over in his grave if heard all the people using his name in conjunction with those devices with "Dials" or "digital readouts" on them. I don't know if it's ignorance or simply laziness. (Probably not stupidity)
...lew...

pete
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Re: Starrett #123 26" Vernier Caliper

Post by pete » Wed Sep 25, 2019 2:11 pm

For me it's practicality, having to use a magnifying glass to even read it for a measurement that's still of less accuracy than a mike doesn't have much appeal. And yes I do know out of the 3 types the vernier if it's well made will almost always beat the other two for accuracy and longevity of it's parts. Not on speed though. It's still a caliper measurement and due to there mechanical design and the required clearances a mike is always going to be more accurate. The vernier calipers are still being made today, on average by the better makers there generally just about as much or more in price than something that's much faster to use.

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