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Old 11-10-17, 12:05 PM   #1
Lister M
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Default Repairing a Digital Caliper

Gentlemen,

I'm still tidying stuff up in the garage and this morning came across a digital caliper which wasn't working so took the old battery out to find it had leaked and corroded the negative contact and no matter how hard I tried I couldn't totally remove the corrosion and because of this the battery wouldn't make proper contact. I thought of placing a folded pad of cooking foil on top of the negative pad, I cut it so that it was no bigger than the the contact area and couldn't touch the positive piece and then put the battery on top of it and it worked, I removed the battery and pad and then glued the foil in place and I now have a fully working digital caliper again.

Martin P
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Old 11-10-17, 12:14 PM   #2
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Have you tried a fibreglass pencil?, I use one for cleaning PCB tracks and have used it on corroded battery compartments as well - example

Stuart.
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Old 11-10-17, 12:20 PM   #3
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Don't know about you but battery always seems to be on the way out when I want to use them and the display will start blinking half way through the job. Do have my old 'proper' verynears and I can even still read them with the right glasses on, my favourites though are the dial gauge type.

NHH
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Old 11-10-17, 12:20 PM   #4
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obviously not hence this method
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Old 11-10-17, 12:26 PM   #5
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Nick,

This was buried under clutter so wouldn't know it had gone flat.

Martin P
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Old 11-10-17, 02:56 PM   #6
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I tend to use the digital ones for most jobs, but have mechanical set for back up. Oddly, I have no trouble reading a linear vernier scale, but struggle with the barrel type on a micrometer??.

Stuart.
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Old 11-10-17, 05:06 PM   #7
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When I worked in the machine shop I loved all the digital stuff, and owned my own callipers, 6 inch 8 inch 18 inch, as well as mic's from 0 to 4" in digital.
Now years later all I ever use is mechanical, my favourite is the 12 inch calliper.

As for all the jokes about 'very near' etc, no matter the make of digital calliper it is accurate to .001" (in the shop used for +/- .005") on a good day, the .0005" resolution is just a waste of time and will not repeat reliably.

As for trying to repair them, you can get decent new sets for less than 20

Neil.
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Old 11-10-17, 05:20 PM   #8
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Quote:
Originally Posted by Hornet 6 View Post
When I worked in the machine shop I loved all the digital stuff, and owned my own callipers, 6 inch 8 inch 18 inch, as well as mic's from 0 to 4" in digital.
Now years later all I ever use is mechanical, my favourite is the 12 inch calliper.

As for all the jokes about 'very near' etc, no matter the make of digital calliper it is accurate to .001" (in the shop used for +/- .005") on a good day, the .0005" resolution is just a waste of time and will not repeat reliably.

As for trying to repair them, you can get decent new sets for less than 20

Neil.
Retired now so have to watch the pennies plus I like fixing stuff.
Oh I bought one for 12 from a local tool supplier last week, now my memory is going as well.
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Old 11-10-17, 06:43 PM   #9
Hornet 6
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Quote:
Originally Posted by Lister M View Post
Retired now so have to watch the pennies plus I like fixing stuff.
Oh I bought one for 12 from a local tool supplier last week, now my memory is going as well.
I like fixing and building stuff as well, but i'm not going to waste my time trying to fix a disposable set of callipers

Neil.
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Old 11-10-17, 06:47 PM   #10
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I bought a cheapy pair of digital calipers after my mitoyo were dropped. They seem alright but i think a cheap pair of "proper ones" would be better.
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