Mystery Tool- What is it?

This topic has 13 replies, 11 voices, and was last updated 16 November 2015 at 11:09 by Ajohnw.

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16 November 2015 at 06:58 #212548
Grotto
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@grotto
I 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?
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16 November 2015 at 06:58 #17897
Grotto
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@grotto
16 November 2015 at 07:21 #212550
Phil P
Participant
@philp
I wonder if it is for adjusting a "Microbore" tip in a boring bar ?

Phil
16 November 2015 at 07:32 #212553
Jim C
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@jimc
It could be used to check for roundness / lobing or concentric it's of one diameter to another ?
16 November 2015 at 07:34 #212554
Jim C
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@jimc
Sorry that should have been concentricity of one dia. to another.
16 November 2015 at 07:54 #212558
Michael Gilligan
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@michaelgilligan61133
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.
16 November 2015 at 08:20 #212560
john carruthers
Participant
@johncarruthers46255
I made something similar to centre the worm gear on a hub in an Alter D6 mount.
16 November 2015 at 08:31 #212561
Emgee
Participant
@emgee
Another use could be to measure the height of a keyway fitted key above the OD of a shaft.

Emgee
16 November 2015 at 08:35 #212563
Harold Hall 1
Participant
@haroldhall1
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
16 November 2015 at 09:12 #212565
Ajohnw
Participant
@ajohnw51620
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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16 November 2015 at 09:55 #212575
Clive Hartland
Participant
@clivehartland94829
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
16 November 2015 at 10:34 #212588
mechman48
Participant
@mechman48
Comparator from an inspection department to check batch samples, lift plunger with lever, place sample under plunger & check dimension ?

George.
16 November 2015 at 10:57 #212601
colin hawes
Participant
@colinhawes85982
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
16 November 2015 at 11:09 #212608
Ajohnw
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@ajohnw51620
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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