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Mystery Tool- What is it?

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Grotto16/11/2015 06:58:49
151 forum posts
93 photos

dsc07046.jpgdsc07045.jpgdsc07044.jpgI bought this awhile ago, partly because the dial gauge is more accurarate than my other, but mainly because I liked the look of it.

Looks like it has a specific use, and wondered if anyone knows what that is?

dsc07043.jpg

Phil P16/11/2015 07:21:19
851 forum posts
206 photos

I wonder if it is for adjusting a "Microbore" tip in a boring bar ?

Phil

Jim C16/11/2015 07:32:51
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76 forum posts
4 photos

It could be used to check for roundness / lobing or concentric it's of one diameter to another ?

Jim C16/11/2015 07:34:09
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76 forum posts
4 photos

Sorry that should have been concentricity of one dia. to another.

Michael Gilligan16/11/2015 07:54:51
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23121 forum posts
1360 photos
Posted by Phil P on 16/11/2015 07:21:19:

I wonder if it is for adjusting a "Microbore" tip in a boring bar ?

Phil

.

Agreed ... I have something similar, but fitted with a micrometer thimble.

MichaelG.

john carruthers16/11/2015 08:20:32
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617 forum posts
180 photos

I made something similar to centre the worm gear on a hub in an Alter D6 mount.

Emgee16/11/2015 08:31:53
2610 forum posts
312 photos

Another use could be to measure the height of a keyway fitted key above the OD of a shaft.

Emgee

Harold Hall 116/11/2015 08:35:39
418 forum posts
4 photos

Used on a surface plate in an inspection department for checking a dimension on a number of identical parts, note the small lever on the top for raising the plunger making it easy to place the component for checking.

Harold

Ajohnw16/11/2015 09:12:04
3631 forum posts
160 photos

There is a stop in the V block formed by the base so it could be used to check a dimension off a round or square bar with some shape on the end.

It will also sit flat on a surface plate so could be used for checking thickness and it just happens to have the V block type facility. I'd guess that is most likely.

John

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Clive Hartland16/11/2015 09:55:07
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2929 forum posts
41 photos

From the marks on the faces of the 'V' it has been used on round items. From this I would think it is used to measure depth of keyways/steps on a round body.

Clive

mechman4816/11/2015 10:34:52
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2947 forum posts
468 photos

Comparator from an inspection department to check batch samples, lift plunger with lever, place sample under plunger & check dimension ?

George.

colin hawes16/11/2015 10:57:10
570 forum posts
18 photos

This is a comparator set up. Usually set up with slip gauges to compare the job being measured against the slips. Where possible It should be adjusted so that the plunger does not need to be lifted each time but the job slid under and through to give a wiping action to ensure no dust build-up on the plunger. The measuring anvil would have a spherical end to facilitate this Colin

Ajohnw16/11/2015 11:09:48
3631 forum posts
160 photos
Posted by Clive Hartland on 16/11/2015 09:55:07:

From the marks on the faces of the 'V' it has been used on round items. From this I would think it is used to measure depth of keyways/steps on a round body.

Clive

The "stop" in the V could match the keyway width so that is probably the best answer yet.

John

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