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Tool i/d and Mitutoyo vernier advice please.

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Phil Stevenson23/08/2018 17:08:53
75 forum posts
13 photos

I have acquired a job lot of assorted tooling, tat and mysterious objects and I'm hoping for some i/d assistance please. First of all, what is this? Marked Moore and Wright and I'm sure I've seen one before somewhere ...p8230005.jpgSecondly, I also got a variety of vernier gauges among which is this Mitotoyo but I can't work out if this is something special or if a piece is missing to allow o/d measurement. There doesn't seem to be a way of zeroing for i/d either.p8230001.jpg

p8230007.jpg

Thanks as ever for any help.

David Standing 123/08/2018 17:28:21
1288 forum posts
48 photos

I can't see the edge of the blade, but the first one looks like a bearing scraper. But I cannot recall ever having seen one all in steel before, they are normally wooden handled.

Lambton23/08/2018 17:28:57
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694 forum posts
2 photos

Phil,

The first item is a M&W triangular scraper which is part of a set of three small scrapers the others being a flat scraper and curved one. They are very desirable.

Can't help with the Mitutoyo dial calliper but like you say it was probably a standard item modified for some special purpose.

Eric

Phil Stevenson23/08/2018 17:48:18
75 forum posts
13 photos
Posted by David Standing 1 on 23/08/2018 17:28:21:

I can't see the edge of the blade, but the first one looks like a bearing scraper. But I cannot recall ever having seen one all in steel before, they are normally wooden handled.

Sorry David, not a good picture but it is triangular as Eric has just identified.

Thank for your help.

Phil Stevenson23/08/2018 17:50:12
75 forum posts
13 photos
Posted by Lambton on 23/08/2018 17:28:57:

Phil,

The first item is a M&W triangular scraper which is part of a set of three small scrapers the others being a flat scraper and curved one. They are very desirable.

Can't help with the Mitutoyo dial calliper but like you say it was probably a standard item modified for some special purpose.

Eric

Thanks Eric. Yes the Mitotoyo may well be a special mod. I think there is something printed on the back which may identify it as such. I'll try to get a picture up. So much to learn!

Michael Gilligan23/08/2018 18:14:57
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15484 forum posts
668 photos
Posted by Phil Stevenson on 23/08/2018 17:08:53:

... among which is this Mitotoyo but I can't work out if this is something special or if a piece is missing to allow o/d measurement. There doesn't seem to be a way of zeroing for i/d either.

.

As others have suggested, it looks to have been neatly modified, to serve for i/d and depth measurement only.

Zeroing is simple ... loosen the knurled screw, rotate the dial, tighten the knurled screw.

MichaelG.

Phil Stevenson24/08/2018 11:08:03
75 forum posts
13 photos
Posted by Michael Gilligan on 23/08/2018 18:14:57:
Posted by Phil Stevenson on 23/08/2018 17:08:53:

... among which is this Mitotoyo but I can't work out if this is something special or if a piece is missing to allow o/d measurement. There doesn't seem to be a way of zeroing for i/d either.

.

As others have suggested, it looks to have been neatly modified, to serve for i/d and depth measurement only.

Zeroing is simple ... loosen the knurled screw, rotate the dial, tighten the knurled screw.

MichaelG.

Thanks Michael it definitely looks like the vernier has been modified. What's left of the left hand o/d shoulder is 2mm short of the i/d hand. Strange but it must have served a purpose. My question was really about where the measuring point for the i/d starts on the gauge. The only way I can see to do this is to use the depth gauge to fix a starting point. It will never be that accurate but will suffice for my woodworking efforts. If I get ambitious I may even try to make up a filler piece to bring the gauge back to it's original purpose.

chris stephens24/08/2018 13:32:09
1045 forum posts
1 photos

Sorry to contradict you Micheal but to zero the dial you use the special tool (that bit of wire with a square bent at one end) that came with the caliper. Turning the dial is just for very minor alignment. I was only thinking about putting up a video on how to do it earlier this week as so many folks seem to not know how it is done.

Phil Stevenson24/08/2018 15:47:46
75 forum posts
13 photos
Posted by chris stephens on 24/08/2018 13:32:09:

Sorry to contradict you Micheal but to zero the dial you use the special tool (that bit of wire with a square bent at one end) that came with the caliper. Turning the dial is just for very minor alignment. I was only thinking about putting up a video on how to do it earlier this week as so many folks seem to not know how it is done.

Yes Chris, you are right, this is not a standard dial vernier. This dial is for fine adjustment only. I'd be very interested in seeing your video!

Thanks all as ever.

Michael Gilligan24/08/2018 16:39:39
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15484 forum posts
668 photos
Posted by chris stephens on 24/08/2018 13:32:09:

Sorry to contradict you Micheal but to zero the dial you use the special tool (that bit of wire with a square bent at one end) that came with the caliper. Turning the dial is just for very minor alignment. I was only thinking about putting up a video on how to do it earlier this week as so many folks seem to not know how it is done.

.

I look forward to seeing it, Chris

MichaelG.

.

Edit: I presume you must be refering to this 'special tool' Chris:

https://www.ebay.com/itm/381686022468

I bought my Mitutoyo dial caliper secondhand, about 30 years ago, and have never seen [or felt the need for] one of those in all this time ... now I'm fascinated.

Edited By Michael Gilligan on 24/08/2018 16:59:57

Clive Hartland24/08/2018 17:00:28
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2556 forum posts
40 photos

I have a complete set of the scraping tools, 3 square, flat and curved, a bit light but usable.

Clive

chris stephens24/08/2018 17:20:37
1045 forum posts
1 photos

Holy crap, $20 with postage! This is another of those cases where if you have a need for one, caliper user and a clumsy bugger who keeps dropping things, guilty as charged, then you should be able to make your own for less than pennies.

I will video its use and post a link soon-ish, biggest delay will be damn slow whiffy connection.

jason udall24/08/2018 18:05:08
2023 forum posts
41 photos
If that dial caliper is an after market mod then it must be common...I have seen one with the same Adulteration...on inspection the finish appeared factory fresh on the cut off bits
Phil Stevenson24/08/2018 19:01:28
75 forum posts
13 photos
Posted by jason udall on 24/08/2018 18:05:08:
If that dial caliper is an after market mod then it must be common...I have seen one with the same Adulteration...on inspection the finish appeared factory fresh on the cut off bits

The finish does indeed look factory fresh, but I still don't understand why the i/d is 2mm offset from the largely unuseable o/d. Maybe just for use as a depth gauge? Intriguing!

Michael Gilligan24/08/2018 19:31:44
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15484 forum posts
668 photos

Posted by Phil Stevenson on 24/08/2018 19:01:28:

... but I still don't understand why the i/d is 2mm offset from the largely unuseable o/d.

.

I think that you will find the shape of the standard external jaws accounts for that.

MichaelG.

.

https://goo.gl/images/iuCfdZ

Edited By Michael Gilligan on 24/08/2018 19:47:53

mechman4825/08/2018 12:18:20
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2637 forum posts
408 photos

… https://goo.gl/images/iuCfdZ

Had a look at the above link... interesting vernier calliper with two dials, looking at the write up, quite some age. I guess you have the choice of using metric or imperial, or for cross relating dimensions.

George.

chris stephens25/08/2018 14:52:16
1045 forum posts
1 photos

As promised a video has been posted on youtube, the link is in a separate thread to allow easier searching for future readers, but just in case the link is here too

https://www.youtube.com/watch?v=Epgo_UW_s-E

John Baron25/08/2018 14:57:38
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279 forum posts
122 photos

Wow $20 for a straightened out paper clip.

chris stephens25/08/2018 15:09:06
1045 forum posts
1 photos

Clearly the seller has a great sense of humour! Mine is a short length of 0.9mm stainless wire not too carefully bent to a square at one end.

Michael Gilligan25/08/2018 19:09:38
avatar
15484 forum posts
668 photos

Well done, Chris yes

But I can honestly say I have never felt the need to do that ... If mine has ever started to read badly wrong, it's always been because there is a tiny bit of brass swarf stuck in the rack: it's then time to remove the rack for a good clean.

MichaelG.

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