Etalon comparator micrometer

Etalon comparator micrometer

This topic has 10 replies, 7 voices, and was last updated 1 June 2020 at 08:55 by Graham Titman.

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28 May 2020 at 13:57 #475608
Former Member
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@formermember32069
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28 May 2020 at 13:57 #19781
Former Member
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28 May 2020 at 14:07 #475615
Michael Gilligan
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@michaelgilligan61133
I can only make the comment: What a beauty !

Sorry, I can offer no useful input at the moment

MichaelG.

.

Got it: http://www.longislandindicator.com/p16.html

Edited By Michael Gilligan on 28/05/2020 14:12:55
28 May 2020 at 14:10 #475620
Jeff Dayman
Participant
@jeffdayman43397
The Etalon comparator mikes are great instruments. We had a number of them in the toolroom at my first job in industry 36 odd years ago. The benefit is not just that they are great for repeat inspection, but like a bench mike the fiducial indicator system controls the measuring pressure and this greatly improves accuracy. Treasure that one! You are lucky to have it.
28 May 2020 at 14:58 #475638
EdH
Participant
@edh
I have a couple of unusual micrometers, the adjustable one is by Starrett and has no model number and the smaller black one is a Cicerimet. They are not used but function perfectly though I haven’t checked them for accuracy.
28 May 2020 at 14:58 #475639
Former Member
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@formermember32069
[This posting has been removed]
28 May 2020 at 15:20 #475645
Former Member
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@formermember32069
[This posting has been removed]
31 May 2020 at 10:30 #476312
Former Member
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@formermember32069
[This posting has been removed]
31 May 2020 at 12:30 #476349
ega
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@ega
EdH:

This looks like your adjustable mic – cost a small fortune when new; illustration is from a 1900 Buck & Hickman catalogue:
31 May 2020 at 23:47 #476542
JohnF
Participant
@johnf59703
Here's one I got unexpectedly on Ebay for an absolute song quite a few years back, being 1-2" its use is limited but fairly recently I made a GO plug gauge for Myford spindle thread using 3 wire method — long story as to why I needed this even of accuracy but its a useful tool to have. We used them regularly when I worked in industry.
1 June 2020 at 08:55 #476579
Graham Titman
Participant
@grahamtitman81812
Looks similar but different make and needs some work.

Edited By Graham Titman on 01/06/2020 08:55:35
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