Question about Fowler Outside Micrometer Set 0 - 4"
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
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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Jan 08, 2015 | Fowler Measuring Tools & Sensors
You may check the calibration by using the following directions. First, adjust
your micrometer setting to 2. Squeeze the trigger against the handle. The
calibration line is a small, raised line embossed on the top of the spreader's
shut-off plate. With the micrometer set at 2 and the trigger squeezed against
the handle, the calibration line should be aligned with the back edge of the
To adjust the alignment, use a small wrench to turn the black calibration screw at the lower end of the control wire leading from the micrometer rate setting barrel. Adjust the screw until the calibration line and back edge of the hopper meet. If you have any difficulty checking the calibration, contact us and we will be happy to help walk you through the adjustment.
When you are not pulling on the trigger handle, the cable should be loose. When you pull on the handle, the cable becomes taut and the shutoff plate slides open.
If you need further assistance feel free to contact us @ 1-800-543-8873
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