Question about Fowler Outside Micrometer Set 0 - 4"

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Micrometer trouble I have a 2" to 3" outside micrometer. The lock ring was overtightened and now the barrell will not turn as smoothly. Can I fix this myself?

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Have you looked at the granite surface plates? I think that it would work really well in this situation. I think that they are sturdy enough that they could get you the stability that you need.

Posted on Jan 18, 2012

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My experience in this type of repair spans over 18 years of Calibration experience in working for a Major Automotive Supplier.
So I will attemp to walk you through this. There are several different models of micrometers and each manufacture has a different design. Most of my expertise is with Mitutoyo, Bown&Sharp and Starrett. There could be a couple of other under lying problems due to the "overtightening".
One: could be due to a scratch on the spindle "barrell" from trying to rotate the spindle when it was locked.
Two: the spindle could actually be bent.
Three: If left in the lock position for a period of time, it could have a slight bit of corrosion on the spindle.
If at all possible, remove the lock, loosen the spindle and remove the spindle completely. Place the spindle on a known flat surface. If you have a granite surface plate that would be perfect, if not try a smooth glass top. The idea is to check the spindle to see if it is bent by rolling it and checking for straightness. If it is bent or badly scratched, then it would be cheaper to just purchase a good micrometer from eBay than to try and get parts.
If it is not bent then it could be corrosion so clean with a pure grade alcohol and reassemble.
If you still have the tightness, then it could also be an alignment issue and that is just going to take a lot of patience, and it still may be cheaper in the long run to replace it.
Most precision mics will not tolerate harsh treatment or environments, so be careful..........hope this helps....

Posted on Dec 11, 2008

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Posted on Jan 02, 2017

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3 Answers

I have a fowler IP54 outside caliper micrometer 7-8" that is zeroed out. There are only 2 keys, a mm/in and zero. How do I reset to have it read 7.0 at 7.0?


Generally, micrometers are "zeroed" to a standard -- an object of a known specific length or diameter. If you have placed a 7-inch standard in the micrometer and brought the spindle into proper contact with that standard, and then zeroed the micrometer at that point, it will be properly set to seven inches. Standard micrometer travel is only one inch, and only that range is usually displayed. The user must then add the standard length to the face display or thimble reading to get the "developed" measurement.

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User Manual?


r binson-

Mitutuyo does not produce a manual specific to the 193-211; however, you can find the manual applicable to all of Mitutuyo's series of digital outside micrometers at: Link.

If you have found this helpful please take a moment to give me four thumbs up.

Regards,

DIYpro

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1 Answer

I lost my owner's manual and need to know how to reset the micrometer to zero


This is based on an old Brown & Sharp guide book. 1. Carefully clean the measuring surface by pulling a piece of soft paper between the surfaces while the anvil and spindle are in light contact with it. 2. with the anvil and spindle apart, unlock cap with spanner wrench (supplied with unit), then tighten cap lightly with fingers to bring slight tension between thimble and spindle. 3. Bring anvil and spindle together by turning SPINDLE and set zero line on thimble to coincide with line on barrel. 4. Move spindle away from anvil by turning SPINDLE, NOT by turning thimble. 5. Holding thimble only, tighten cap with fingers. Do Not Touch Frame. Lock cap with wrench, still holding thimble only, and adjustment is complete. NOTE: Check zero setting after adjustment is made. Hope this helps

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