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What is this mic used for?

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Charles R	04/08/2020 12:20:36
24 forum posts 15 photos	Can anyone shed light on the purpose of this metric Moore and Wright tool? Looks like a conventional depth mic but has the scale going in the opposite direction.
Nicholas Farr	04/08/2020 12:46:53
3988 forum posts 1799 photos	Hi Charles R, could just be a micrometer head fitted to a custom made block which probably fitted to an instrument or machine for setting procedures. Does it have a number on the thimble? Regards Nick.
Clive Brown 1	04/08/2020 13:22:50
1050 forum posts 56 photos	Agree with Nick. The standard M&W depth mic. had a rather more shapely block.
Mike Poole	04/08/2020 14:00:38
3676 forum posts 82 photos	The micrometer parts are available for use on custom jigs etc. They are handy to make into a special purpose mic should you ever develop the need for one. Mike
Clive Foster	04/08/2020 14:01:28
3630 forum posts 128 photos	That style of micrometer head an bock is frequently found on the micrometer adjusted slides / carriers used with optical benches and tables. Usually two counterbored holes to fixt it. Clive
Charles R	04/08/2020 20:26:32
24 forum posts 15 photos	Posted by Nicholas Farr on 04/08/2020 12:46:53: Hi Charles R, could just be a micrometer head fitted to a custom made block which probably fitted to an instrument or machine for setting procedures. Does it have a number on the thimble? Regards Nick. Hi Nick...think you may well be correct and there's no M&W model number on the thimble.
Charles R	04/08/2020 20:30:18
24 forum posts 15 photos	Posted by Clive Brown 1 on 04/08/2020 13:22:50: Agree with Nick. The standard M&W depth mic. had a rather more shapely block. Hi Clive...I thought the same myself about the unshapely block, which incidentally measures (exactly) 1/2" in depth.
Charles R	04/08/2020 20:31:24
24 forum posts 15 photos	Posted by Mike Poole on 04/08/2020 14:00:38: The micrometer parts are available for use on custom jigs etc. They are handy to make into a special purpose mic should you ever develop the need for one. Mike Hi Mike...didn't realise that and thanks for info.
Charles R	04/08/2020 20:33:52
24 forum posts 15 photos	Posted by Clive Foster on 04/08/2020 14:01:28: That style of micrometer head an bock is frequently found on the micrometer adjusted slides / carriers used with optical benches and tables. Usually two counterbored holes to fixt it. Clive Think you may have hit the nail on the head Clive, as there are indeed 2 small counterbored holes in it.
Charles R	04/08/2020 20:35:58
24 forum posts 15 photos	Also, it's different in that it reads in the opposite direction to a normal depth mic, plus it's only graduated to 13mm.

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