cheap digital vernier calipers.

[mick70Participant @mick70]

odd one this.

my 7 yr old girl as put measurer like daddies on xmas list.

finally sussed she means my digital vernier caliper, i have rough use set i let her use but she wants her own.

where can i get her cheap set?

not got e-bay account.

ta

[mick70Participant @mick70]

[Mike E.Participant @mikee-85511]

I often see them in Lidl for about £10.oo

[not done it yetParticipant @notdoneityet]

Question: Do you mean digital or vernier? They are not the same!

[mick70Participant @mick70]

called as per arc do in their catalogue.

that's how i figured what she wanted as left it open on that page.

buts it's digital

[not done it yetParticipant @notdoneityet]

called as per arc do in their catalogue.

How amazingly easy it is to corrupt the english language! Next we will have curved straight edges?

I presume arc do not offer, for sale, a vernier caliper? So possible misrepresentation to catch the attention of those that really wanted a vernier scale?

But, I suppose, my analogue clocks still have digits painted, or printed, on the clock dial….. but they are still analogue.

[Neil WyattModerator @neilwyatt]

See my test in the latest MEW.

These ones from Machine DRO cost less than £13 and are better finished and performed better than typical budegt calipers.

http://www.machine-dro.co.uk/150mm-6-digital-caliper-with-tolerence-function.html

I honestly wouldn't bother buying the discounter's ones again having seen these.

These are worth looking at too:

http://www.machine-dro.co.uk/200mm-8-digitronic-digital-caliper-moore-wright-basic-line-110-dbl-series.html

These are half price at just over £40, they seem to have sold out of the 6" version, which I found to be a really nice piece of kit.

<edit!> Just seen these are for her! The bargain ones above are a good choice as they don't have the sharp edges many of the supermarket ones have.

She sounds sensible but PLEASE know that small batteries can cause terrible injuries if swallowed.

Neil

Edited By Neil Wyatt on 12/11/2016 14:56:29

[Michael GilliganParticipant @michaelgilligan61133]

Posted by not done it yet on 12/11/2016 14:07:27:

Question: Do you mean digital or vernier? They are not the same!

.

… Despite the use of 'digital vernier' by [even] our illustrious Editor in his recent test.

MichaelG.

[Frances IoMParticipant @francesiom58905]

I’ve had a 6″ Swiss made plastic dial calliper originally bought for woodwork for many years(being bright yellow didn’t get lost on bench + having no batteries to wear out) – still accurate enough for rough work or general woodwork – if such still available, maybe second hand, would be much safer for a young child as my metal callipers either have sharp edges or could easily damage her or anything she used it on though there is still a small metal rod that extends from one end that could cause some damage

Edited By Frances IoM on 12/11/2016 15:29:53

[Dan CarterParticipant @dancarter89683]

I got this **LINK** for £6.99 to go in my apron chest pocket – it is 75mm so it fits perfectly, and is plastic so it won't kill me when I fall on it (similarly maybe better for a 7 year old)

I know you said no ebay, so I think this is the same:**LINK**

I would also recommend to the grown ups – it is obviously not super accurate, but is great for checking stock size etc, and as it fits in the pocket is always with me. 2 caveats – it zeros when switched on, so you have to remember to do so with it closed, and no depth measuring pokey thing

Regards,

Dan

[SillyOldDufferModerator @sillyoldduffer]

How about one of these. No batteries!

Neil's warning is about batteries is deadly serious – have a look at this report. There's no way I would give a child anything with a button cell in it.

Every cloud has a silver lining. Next time I need to bump someone off I shall feed them a CR2032.

Dave

[Neil WyattModerator @neilwyatt]

Probably not important for a kid but the eBay/Amazon one has an ambiguous listing:

will provide precision readings from 0.1mm and 0.01in.

Specifications:

Resolution: 0.01mm (0.0005in).
Accuracy: ± 0.2mm (0.001in).

I once got caught out buying a cheap plastic pair for 'hack' and they only read to 0.1mm. OK for checking stock sizes or making a drill depth readout.

You could glue the battery compartment shut. Kids toys always (should) have a screw on the fixing tab.

[nigel jones 5Participant @nigeljones5]

I recently bought 3 (dont ask why) cheap £7-8 calipers off ebay from china. One is workable, one is difficult and I got my money back on the third as it was utterly useless. I wanted a mitutoyo but theyre just that bit too dear so I splashed out twenty notes an a sealy and it is very nice(moral here is dont get a ultra cheap one from china). I read about the button battery issues a few weeks back, there are calls to ban them from kiddie products and its not hard to see why.

[Geoff TheasbyParticipant @geofftheasby]

Google "Plastic calipers", Amazon do them for 1.78. I have a promotional pair which are good enough for woodworking.

Geoff

[Gordon WParticipant @gordonw]

I would ask the young lady why she wants the calipers. It may be from scientific interest, it may be because the matt chrome finish looks cool. This is from my own experience.

[Mike PooleParticipant @mikepoole82104]

Posted by not done it yet on 12/11/2016

How amazingly easy it is to corrupt the english language! Next we will have curved straight edges

A straight edge is a curve of infinite radius

mike

[not done it yetParticipant @notdoneityet]

A straight edge is a curve of infinite radius

Absolutely, but in crass advertising gimmicks, that might not be a good move. Same as a circle being a polygon. Very few know that to define a square needs four equal sides and only one right angle.

Very few recognise, or even know, that a battery must comprise of more than one unit; inarticulate beekeepers refer to different size hive boxes with incorrect nomenclature – calling one size a 'super' but it likely being used as a 'brood' box, orceven vice versa

There are lots of other scenarios where units are mixed, etc. Just not good enough for precision in any particular discussion. Accuracy and precision are another pair of misused words.

Dumb journalists who don't know the difference between MW and MWh, convert approximate measurements in metres to an exact conversion to the nearest inch (or even foot) in Imperial, etc, etc.

All this makes no odds. There is no such thing as a digital vernier. Using someone else's mistake to claim an incorrect answer in an exam is right, will not cut much ice with the examiner!

[Michael GilliganParticipant @michaelgilligan61133]

Posted by not done it yet on 13/11/2016 11:28:12:

… All this makes no odds. There is no such thing as a digital vernier. Using someone else's mistake to claim an incorrect answer in an exam is right, will not cut much ice with the examiner!

.

Whilst we're at it … let's do Monsieur Vernier the courtesy of capitalising his name.

MichaelG.

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P.S. … We have been down this 'no such thing as' path before; and I suggested that it may actually be feasible to construct a 'digital Vernier' in the true sense. If you consider the method of reading a Vernier scale, the process [including the human operator] is 'digitised' by judging the nearest alignment of lines; and that could be replicated electronically. [N.B. nothing in this is intended to condone the use of 'digital vernier' to describe a caliper/calliper with digital scales and a numeric display]

[not done it yetParticipant @notdoneityet]

let's do Monsieur Vernier the courtesy of capitalising his name.

Let's also know that there are ttwo types of noun – proper and common.. Nor do adjectives require capitalisation.

[Michael GilliganParticipant @michaelgilligan61133]

I merely suggested a courtesy.

MichaelG.

[Gordon WParticipant @gordonw]

Never knew vernier was an adjective, or am I misunderstanding, again. We should stick with the the common journalistics – Double decker bus, twice the size of Wales etc. etc..

[SillyOldDufferModerator @sillyoldduffer]

Posted by Michael Gilligan on 13/11/2016 13:25:13:

Posted by not done it yet on 13/11/2016 11:28:12:

… All this makes no odds. There is no such thing as a digital vernier. Using someone else's mistake to claim an incorrect answer in an exam is right, will not cut much ice with the examiner!

…

We have been down this 'no such thing as' path before; and I suggested that it may actually be feasible to construct a 'digital Vernier' in the true sense. If you consider the method of reading a Vernier scale, the process [including the human operator] is 'digitised' by judging the nearest alignment of lines; and that could be replicated electronically.

…

Isn't that sort of how the common capacitive type work? The stator consists of lines of capacitor plates as does the slider, but thjose on the slider are differently spaced. As the slider moves relative to the stator, the shifting line patterns are interpolated to measure the interval more accurately. M.Vernier would not have thought in terms of capacitors and phase-shifts, but I think he might recognise his principle.

Dave

[Michael GilliganParticipant @michaelgilligan61133]

Posted by SillyOldDuffer on 13/11/2016 18:05:52:

Isn't that sort of how the common capacitive type work? The stator consists of lines of capacitor plates as does the slider, but thjose on the slider are differently spaced. As the slider moves relative to the stator, the shifting line patterns are interpolated to measure the interval more accurately. M.Vernier would not have thought in terms of capacitors and phase-shifts, but I think he might recognise his principle.

.

Yes, 'sort of' …

Perhaps they owe more to Moiré

MichaelG.

.

Copied from a 2013 post:

There is some interesting reading here

… especially the comment by Hans U. Meyer

MichaelG.

.

P.S.  You can find his Patents on espacenet

Inventor = MEYER HANS ULRICH [CH]

Edited By Michael Gilligan on 13/11/2016 18:34:26

Edited By Michael Gilligan on 13/11/2016 18:57:18

[Neil WyattModerator @neilwyatt]

A wise man once wrote:

"because of their general resemblance to mechanical vernier calipers, these devices are often referred to as ‘digital verniers’. It’s possible to come up with a complex justification for such a name, but if you want to stay out of meaningless arguments, I suggest you call them ‘digital calipers’."

Neil

[Neil WyattModerator @neilwyatt]

Of course the productive ground for argument is calliper or caliper?

The OED lists both…

Neil

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