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Thread: Mitutoyo vernier imperial
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25th May 2020, 05:21 PM #1Senior Member
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- Jun 2011
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- gold coast
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Mitutoyo vernier imperial
Hi Everyone,
I found this vernier in the bottom of one of my 'work' toolboxes, which I dont visit much these days.
It was covered in a sticky substance---I have no idea what.
It wouldnt move at all.
I sprayed in in metho and then inox and let it sit overnight.
I found a jewelers screwdriver and managed to ease the tiny screws on the top of the sliding jaw. I assumed they held pressure on tiny internal gibs or similar.
I need to stress, I took gentle care not to strain or stress anything.
After several floods of metho and then inox , the sliding jaw moved about an inch and then froze again.
Ive sprayed it with shellite to sit overnight.
So my question is before I go any further, whats the best approach to renovating this vernier?
Since it is a 'work' instrument, I know it was a good quality one, and I know it would have gone out of service when metric was introduced.
Usually I use a digital vernier that changes metric/imperial at the touch of a button, but the one I have is not very accurate.
So I'd like to get this one going if I can.
Please help!
regards
Brian
20200525_150537.jpg
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25th May 2020, 07:34 PM #2Most Valued Member
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- Jul 2006
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- Athelstone, SA 5076
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- 4,255
CRC or other type
Acetone. But does attack painted markings
Petrol?
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25th May 2020, 07:40 PM #3Most Valued Member
- Join Date
- Jul 2006
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- Athelstone, SA 5076
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- 4,255
CRC
Acetone, but does attack painted markings.
Petrol
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26th May 2020, 01:27 AM #4Senior Member
- Join Date
- Aug 2007
- Location
- Saskatoon, Saskatchewan, Canada
- Posts
- 292
Mitutoyo have parts diagrams for all their measuring tools. https://www.mitutoyo.co.jp/eng/suppo...ce/parts_list/. Fill in the model number from the vernier or box it came in and like magic you see a breakdown of all the pieces. It'll help you figure out how to disassemble it. If my memory serves the two screws on top press on a little brass bar that controls the sliding pressure and to some extent how the jaws come together. I would soak it in a container of Varsol or mineral spirits for a few days before trying anything harsh. It is a pretty simple mechanism and if you take it apart there won't be too many parts to loose.
Pete
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26th May 2020, 11:08 AM #5Golden Member
- Join Date
- Dec 2007
- Location
- Adelaide
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- 574
I've found turps is good to clean off many different types of adhesives, only downside I have found is that horrible turps odour.
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27th May 2020, 01:02 PM #6Senior Member
- Join Date
- Jun 2011
- Location
- gold coast
- Posts
- 303
Thanks everyone for your input.
I systematically soaked it in shellite then Inox with a gentle wriggle in between.
over a day the shellite leached all the 'brown stuff' out and with the 'gibs' out the caliper is now working.
a soak overnight in shellite and I will start reassembling it today.
I think it will work ok now--hopefully.
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