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Hello: While looking for something else, this morning I came across a brand new 6" Mauser caliper on sale at? the local e-place. I'm a magnet for these things and could not let it pass by. Much less when it was going for a bit under US$16.00.  A beautifully made instrument, it has an aura of quality all over it. There is a inch/mm Whitworth equivalence table on the back of the slider (with German/Italian/Spanish abbreviations) and what seems to be a table of weights for round and square steel in kg/m, have to study to see how to read it properly. Two things caught my attention: it does not say "Made in Germany" or "Made in W. Germany". But the small leaflet with the Mauser logo says Mauser-Messzug GmbH and Oberndorf-Neckar, where heavy industries such as Heckler & Koch are located. Could it be from as far back as the mid 1950's? The tiny two page leaflet inside the plastic box it came in reads 56-100-12.56-HB., which could well be date of print. That would make it ~67 years old. The other is the scale. I have not been around much, but all the calipers I have used have a different type of scale. ie: with numbers Maybe because it is just for up to 0.1 mm? Thanks in advance. Best, JHM
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This site may help you:?
I have a Helios vernier caliper I bought very used when I was 17 or 18. Unfortunately, I'm not exactly sure where it is right now. ;) IIRC, the scales are numbered on mine. I suspect yours is meant to measure in centimeters and fractions thereof, not millimeters. I'm not at all sure how to measure with that sort of vernier, despite having owned one for so long. Mine was meant for fractional inches, though it does have the metric scales, as well. Even if not great for fractional millimeters, it's going to be fine for measuring raw stock, and I'd have snapped it up, myself. I'm fond of Mauser firearms, too.?
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY!
On Monday, July 25, 2022 at 11:49:35 AM CDT, sawbona@... <sawbona@...> wrote:
Hello: While looking for something else, this morning I came across a brand new 6" Mauser caliper on sale at? the local e-place. I'm a magnet for these things and could not let it pass by. Much less when it was going for a bit under US$16.00.  A beautifully made instrument, it has an aura of quality all over it. There is a inch/mm Whitworth equivalence table on the back of the slider (with German/Italian/Spanish abbreviations) and what seems to be a table of weights for round and square steel in kg/m, have to study to see how to read it properly. Two things caught my attention: it does not say "Made in Germany" or "Made in W. Germany". But the small leaflet with the Mauser logo says Mauser-Messzug GmbH and Oberndorf-Neckar, where heavy industries such as Heckler & Koch are located. Could it be from as far back as the mid 1950's? The tiny two page leaflet inside the plastic box it came in reads 56-100-12.56-HB., which could well be date of print. That would make it ~67 years old. The other is the scale. I have not been around much, but all the calipers I have used have a different type of scale. ie: with numbers Maybe because it is just for up to 0.1 mm? Thanks in advance. Best, JHM
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Hello
JHM:
The
lower scale is metric, each line is 1mm and with the vernier
you can read to 0.1mm, (0.004"). The caliper is set to 25.4mm
( 1" ).
The top
scale is inches, each line is 1/16" and with the vernier you
can read to 1/64" ( 0.015625" or 0.4mm ). 4 times courser that
the metric scale. Not the handiest scale, a scale that reads
to 0.001" is much more useful.
I never
use my vernier caliper, I use dial calipers instead. The
electronic calipers are handy, they switch from metric to
inches and you can set zero anywhere for comparison
measurements. But they take batteries and the electronic may
fail some day with no way to repair. On the plus side Harbor
Freight has them cheap.
Carl.
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Hello:
While looking for something else, this morning I came across a
brand new 6" Mauser caliper on sale at? the local e-place.
I'm a magnet for these things and could not let it pass by.
Much less when it was going for a bit under US$16.00.
A beautifully made instrument, it has an aura of quality all over
it.
There is a inch/mm Whitworth equivalence table on the back of the
slider (with German/Italian/Spanish abbreviations) and what seems
to be a table of weights for round and square steel in kg/m, have
to study to see how to read it properly.
Two things caught my attention: it does not say "Made in Germany"
or "Made in W. Germany".
But the small leaflet with the Mauser logo says Mauser-Messzug
GmbH and Oberndorf-Neckar, where heavy industries such as Heckler
& Koch are located.
Could it be from as far back as the mid 1950's?
The tiny two page leaflet inside the plastic box it came in reads
56-100-12.56-HB., which could well be date of print.
That would make it ~67 years old.
The other is the scale.
I have not been around much, but all the calipers I have used have
a different type of scale.
ie: with numbers
Maybe because it is just for up to 0.1 mm?
Thanks in advance.
Best,
JHM
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Hello:
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On Mon, Jul 25, 2022 at 02:07 PM, Bill in OKC too wrote:
This site may help you ...
Thanks for the link. It does read in mm I can read 25.4mm when I set it at 1.0" like in the photo I uploaded. It is the lack of numbers in the lower scale is what seemed strange to me. I found a Mauser-Messzeug catalogue from the early/mid 1950's with what would seem to be the complete Mauser line of measuring instruments. My 25mm / 0.01 micrometer is there and now my 160mm caliper. I'll upload it to the files section for reference. Thanks for your input. Best, JHM
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Hello:
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On Mon, Jul 25, 2022 at 04:04 PM, Carl wrote:
... lower scale is metric, each line is 1mm and with the vernier you can read to 0.1mm ...
Yes, I can make it out to 0.1 mm. Then the lack of numbers must be because this model can read only up to 0.1 mm The rest you have to guess.
... top scale is inches, each line is 1/16" and with the vernier you can read to 1/64" ...
I have never been able to make much sense of inches, even though I went to school abroad and learned how to measure in inches before doing so in the metric system.? 8^/
... use dial calipers instead.
I have never had the chance to use them and my eyesight constantly reminds me that it may be a good thing to get one. But I have always had the feeling that they are fragile, same as the electronic ones. The less expensive ones ie: cheap even more so, as well as inaccurate. When I get my U3 fully set up and all the needed tooling I am now needing has been purchased I may undertake one of the many basic digital readouts I have seen published for the U3. Or maybe just invest/make a decent set of handwheels, the original ones are a real PITA. Thanks for your input. Best, JHM
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I have a cheap dial caliper (~$30) I got in the mid 80's, and it's still doing well after all these years with almost daily use.? I have better ones, but the old one still gets the most use.? I will also add that the HF digital calipers are hit or miss.? I have one that has always been a bit flakey, but when it's working correctly, it performs just as well as my Mitutyou digital micrometer.? When it's misbehaving, it zeros randomly and likes switching units, particularly inch to mm.? Some people never have problems, others are similar to mine.
-Dave
On Monday, July 25, 2022 at 01:54:50 PM PDT, sawbona@... <sawbona@...> wrote:
On Mon, Jul 25, 2022 at 04:04 PM, Carl wrote:
... lower scale is metric, each line is 1mm and with the vernier you can read to 0.1mm ...
Yes, I can make it out to 0.1 mm. Then the lack of numbers must be because this model can read only up to 0.1 mm The rest you have to guess.
... top scale is inches, each line is 1/16" and with the vernier you can read to 1/64" ...
I have never been able to make much sense of inches, even though I went to school abroad and learned how to measure in inches before doing so in the metric system.? 8^/
... use dial calipers instead.
I have never had the chance to use them and my eyesight constantly reminds me that it may be a good thing to get one. But I have always had the feeling that they are fragile, same as the electronic ones. The less expensive ones ie: cheap even more so, as well as inaccurate. When I get my U3 fully set up and all the needed tooling I am now needing has been purchased I may undertake one of the many basic digital readouts I have seen published for the U3. Or maybe just invest/make a decent set of handwheels, the original ones are a real PITA. Thanks for your input. Best, JHM
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I would suggest that JHM, you search the internet for “how to read a Vernier scale”, it’s easy to do but harder to describe here in words than see in a sketch online. ?
(I’m in my mid sixties and when I was in year 3 secondary school (13-14yo), one pupil had an electronic calculator with glowing red numbers. ?We learnt to read vernier callipers in Physics classes, but it would have dropped off the syllabus within a few years. ?I had a slide rule that my uncle, an eminent physicist, said, had more functions on it than he’d ever used, but my fellow pupils scorned my claim to be able to read 4 significant figures off it. ?4 figure logarithm tables were the norm. But I still use my slide rule to take dimensions off an odd-scaled drawing of a model subject. )
?Digital devices give us a wonderful sense of precision, but the workpiece’s actual precision is never better than its least accurate dimension.
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On 25 Jul 2022, at 21:43, sawbona@... wrote:
?Hello: On Mon, Jul 25, 2022 at 02:07 PM, Bill in OKC too wrote:
This site may help you ...
Thanks for the link. It does read in mm I can read 25.4mm when I set it at 1.0" like in the photo I uploaded. It is the lack of numbers in the lower scale is what seemed strange to me. I found a Mauser-Messzeug catalogue from the early/mid 1950's with what would seem to be the complete Mauser line of measuring instruments. My 25mm / 0.01 micrometer is there and now my 160mm caliper. I'll upload it to the files section for reference. Thanks for your input. Best, JHM
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On Tue, Jul 26, 2022 at 02:10 AM, Dave Seiter wrote:
I have a cheap dial caliper (~$30) I got in the mid 80's, and it's still doing well ...
Hmmm ... I'd say that the old adage about things not being made like they did before applies in this case. 8^) To point: I recently purchased a beautiful/practically new 20mm/0.01mm K?fer dial gauge for an excellent price. It has a serial number but the OEM has no idea (!) of the manufacturing date, estimating it at 30/40 years old, so it's early 80's/90's. All stainless steel construction and mineral glass. A modern version of it would be a special edition and should I want to purchase one, I'd be looking at a +60 day lead time. Special edition means metal back, metal bezel and with mineral glass which is probably not the same thing I have. Thanks for your input. Best, JHM
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On Tue, Jul 26, 2022 at 05:32 AM, Mehmood wrote:
... search the internet for “how to read a Vernier scale”, it’s easy to do but harder to describe ...
Indeed. I've had no problems reading the scale. I was just curious about it not having numbers, probably because it is only good to 0.1mm. The doubts I had was about reading the table on the back part of the main scale: 
... learnt to read vernier callipers in Physics classes ...
Yes, so did I.? 8^D And before that, the logarithmic scales and an Aristo Scholar slide rule which I cannot remember what I did with. I took my Physics and Chemistry 'O' Levels using logarithmic scales.? I have a couple of slide rules, both gifted to me by a co-worker: a pocket Aristo 868 and a 530mm engineers model made from wood, probably pre-WW2. I'm a couple of years older and my eyesight has grown worse, so it is a task to even try to use them.
Digital devices give us a wonderful sense of precision ...
Yes. But just a sense of.? 8^D Thanks a lot for your input and the memories it brought back. Best, JHM
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Ah yes,
A set of 4 figure log tables and then a British Thornton slide rule. How wonderful were they. The exam board wanted to reduce exam times because it was quicker to get results with a slide rule!
Then in 1974 I went to university, the Prof of Mechanical Engineering, had calculated that the cost of calculators, in terms of student lunch costs, was the same as when the slide rule was introduced.
So off we went with RPN with HP 65s and Sinclair scientific. Heady days.
James, in sunny Fife.?
Hello:
On Tue, Jul 26, 2022 at 05:32 AM, Mehmood wrote:
... search the internet for “how to read a Vernier scale”, it’s easy to do but harder to describe ...
Indeed.
I've had no problems reading the scale.
I was just curious about it not having numbers, probably because it is only good to 0.1mm.
The doubts I had was about reading the table on the back part of the main scale:
... learnt to read vernier callipers in Physics classes ...
Yes, so did I.? 8^D
And before that, the logarithmic scales and an Aristo Scholar slide rule which I cannot remember what I did with.
I took my Physics and Chemistry 'O' Levels using logarithmic scales.?
I have a couple of slide rules, both gifted to me by a co-worker: a pocket Aristo 868 and a 530mm engineers model made from wood, probably pre-WW2.
I'm a couple of years older and my eyesight has grown worse, so it is a task to even try to use them.
Digital devices give us a wonderful sense of precision ...
Yes. But just a sense of.? 8^D
Thanks a lot for your input and the memories it brought back.
Best,
JHM
--
James Batchelor?
Dunfermline, Fife, UK.?
07805 207238
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My apologies, I had interpreted your query about the lower scale on the vernier having no numbers, so I supposed that you didn’t know about using the scale notch that is closest a notch on the principle scale as a datum and counting back from there to the measurement point, tenths for the millimetre scale and eighths of eighths for the inches scale. ?(Just in case someone doesn’t get it, the Vernier scale is 9/10ths the width of the millimetre divisions, or 7/8ths of the 1/8” divisions, allowing you to measure by eye to the next significant figure below the marked scale.)
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On 26 Jul 2022, at 23:50, sawbona@... wrote:
?Hello: On Tue, Jul 26, 2022 at 05:32 AM, Mehmood wrote:
... search the internet for “how to read a Vernier scale”, it’s easy to do but harder to describe ...
Indeed. I've had no problems reading the scale. I was just curious about it not having numbers, probably because it is only good to 0.1mm. The doubts I had was about reading the table on the back part of the main
...
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Hello:
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On Wed, Jul 27, 2022 at 08:09 AM, Mehmood wrote:
My apologies, I had interpreted your query ...
No, no need to apologise, none whatsoever. It is I who should apologise for not being clear enough. Some days I write too early and without having had my first espresso. ;^° Thanks so much for your input, especially the explanation for the scale. Best, JHM
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Bill in OKC too
Carl
James Batchelor