Adjusting Digital and /or Vernier Calipers

F

fortyfour73

#1
Good day.

I operate an internal calibration lab at my work and have been experiencing ailments with calipers (mainly digital).

I need to know the corrrect way to "adjust" calipers when found out of tolerance. I have been cleaning them more and found a few come in to correct specs, but some, not so much.

There are classes out there for repair, but wanted to know any sites or attachments anyone may have for this??? Want to be able to do the adjustments (or as much as possible) myself to save on buying new everytime and also to be able to pass the knowledge on here and add to some training for operators and this would help me out alot.

Thanks
 
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R

Rusty Stuff

#2
Re: Digital and /or Vernier calipers adjustments

Good day.

I operate an internal calibration lab at my work and have been experiencing ailments with calipers (mainly digital).

I need to know the corrrect way to "adjust" calipers when found out of tolerance. I have been cleaning them more and found a few come in to correct specs, but some, not so much.

There are classes out there for repair, but wanted to know any sites or attachments anyone may have for this??? Want to be able to do the adjustments (or as much as possible) myself to save on buying new everytime and also to be able to pass the knowledge on here and add to some training for operators and this would help me out alot.

Thanks
I believe you're on the right track by ensuring the cleanliness of the digital calipers. If they're not the coolant-resistant type, any type of moisture on the scale will cause error messages. You might also check the 2 gib screws on top. (Not the locking screw which holds the calipers at a fixed location.) These are usually recessed, and they affect how "snug" the reader head slides on the rail. If they are too loose, you'll have repeatability problems. Be careful when turning these screws, because it doesn't take much to make it too loose or too tight (less than 1/4 turn). Also - check out Long Island Indicator's website. They have a WEALTH of information there. Good luck!
 
N

NTAinc

#3
Re: Digital and /or Vernier calipers adjustments

I believe you're on the right track by ensuring the cleanliness of the digital calipers. If they're not the coolant-resistant type, any type of moisture on the scale will cause error messages. You might also check the 2 gib screws on top. (Not the locking screw which holds the calipers at a fixed location.) These are usually recessed, and they affect how "snug" the reader head slides on the rail. If they are too loose, you'll have repeatability problems. Be careful when turning these screws, because it doesn't take much to make it too loose or too tight (less than 1/4 turn). Also - check out Long Island Indicator's website. They have a WEALTH of information there. Good luck!
Another simple thing to check with digital calipers is the battery. The first things I do when a caliper is out of tolerance or acting funny is clean it and change the battery.

I've also used Long Island Indicator's website in the past, particularly for their opinion on the quality of products from different manufacturers.

Tessa.
 
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