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Mystery Inspection Item

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Martin King 215/08/2020 13:08:38
997 forum posts
446 photos

Hi all,

This is part of an auction lot of inspection instruments and tooling from last week. I know that Carl Mahr make precision micrometers etc but have no idea what this might be? Is it some sort of Go/No Go gauge perhaps? If so, probably of no use to me apart from the steel!

The two parts seem to be fixed together in the frame?

mahr 1.jpg

mahr 5.jpg

Any info much apprediated.

Regards, Martin

DC31k15/08/2020 13:31:30
662 forum posts
2 photos

Somebody else has one anyway

(seller has quite a few for sale. The numbers appear to be half their length).

Keith Long15/08/2020 13:52:34
877 forum posts
11 photos

Why not try e-mailing the Mahr UK office in Milton Keynes and ask them what it is?

David George 115/08/2020 23:07:59
1811 forum posts
503 photos

Hi Martin they look like micromiter setting pieces.


DC31k16/08/2020 07:51:20
662 forum posts
2 photos
Posted by David George 1 on 15/08/2020 23:07:59:

Hi Martin they look like micromiter setting pieces.

Used for very small woodworking joints then?

The pieces differ in length by 120mm. I would be interested to see a micrometer that has this range of motion as the usual ones operate over 25mm or 1".

The head off one would be good for a lathe carriage stop or a milling machine length or depth stop.

Speedy Builder516/08/2020 08:01:48
2594 forum posts
208 photos

Used in a setup like this ?

Very Large Micrometer Setup

Martin Connelly16/08/2020 10:54:30
2125 forum posts
222 photos

You can see why coordinate measuring machines have become the go to tool for this sort of thing.

Martin C

gerry madden16/08/2020 11:12:21
251 forum posts
132 photos

Hi Martin, may I ask who was running this auction ? I keep a list of auction sites for stuff like this but I appeared to have missed this on ! I hate the thought of 'gems' going to a bad homes where they wont be appreciated


DC31k16/08/2020 19:17:02
662 forum posts
2 photos
Posted by gerry madden on 16/08/2020 11:12:21:

Hi Martin, may I ask who was running this auction?


Perhaps you might look at this auction:

Pay particular attention to the position, colour and design of the rule in the picture and the drainpipe on LHS. You may have seen them before...

Martin King 218/08/2020 15:50:36
997 forum posts
446 photos

Hi DC31k, The auction was mine! Drainpipe? Could you mean the outdoor brolly in the cntre of the table?

The rule is pretty distinctive in all our listings!

Cheers, Martin

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