Dennis LaMonica
Plastic
- Joined
- Apr 16, 2021
I am reaching out for some help. I had trouble with this post as it is my first and probably have it in the incorrect thread.
I have a B&S #250 Caliper/Mic that is in pristine condition. I had a very difficult time zeroing out the barrel and thimble. It took a LOT of force to turn the barrel with the small wrench that is supplied with the Mic.
The Mic has about .017 backlash. I would assume that there would be an internal tapered split nut that would adjust the backlash. I have tried to disassemble the Mic but cannot figure out how to disassemble it. I took it to the guy who calibrates the measuring instruments for a large machine shop near me and he cannot take it apart or figure it out. Maybe it "predates" him.
I am thinking that there may be some internal corrosion because of the difficulty turning the barrel. When I get it back, I am going to soak it in a penetrant.
But the question is: how is this mic disassembled.
I am attaching a link to a photo off of the web and maybe a thumbnail??
My mic is in NEW AND PRISTINE condition.
BTW I am not a machinist.
https://www.picclickimg.com/d/w1600/...er-Caliper.jpg
I have a B&S #250 Caliper/Mic that is in pristine condition. I had a very difficult time zeroing out the barrel and thimble. It took a LOT of force to turn the barrel with the small wrench that is supplied with the Mic.
The Mic has about .017 backlash. I would assume that there would be an internal tapered split nut that would adjust the backlash. I have tried to disassemble the Mic but cannot figure out how to disassemble it. I took it to the guy who calibrates the measuring instruments for a large machine shop near me and he cannot take it apart or figure it out. Maybe it "predates" him.
I am thinking that there may be some internal corrosion because of the difficulty turning the barrel. When I get it back, I am going to soak it in a penetrant.
But the question is: how is this mic disassembled.
I am attaching a link to a photo off of the web and maybe a thumbnail??
My mic is in NEW AND PRISTINE condition.
BTW I am not a machinist.
https://www.picclickimg.com/d/w1600/...er-Caliper.jpg