Tool Caliper with broken screw

[Susquatch]

Do you intend on reusing the nut or making a new one? I have a pair of dividers that are missing an arched peace that goes between the 2 legs if you find you like repairing these. I think I have a pair of hermaphrodite calipers that is missing a piece also. should I sent them your way?

I plan to try to reuse the parts and I'd like to fix the caliper if I can. The wise choice would be pitch it and buy a new one. But I like old tools and I like to fix them if I can.

But that might change if I can't find a screw. Are your screws 90 thou in diameter?

 

[Megar arc 5040dd]

I plan to try to reuse the parts and I'd like to fix the caliper if I can. The wise choice would be pitch it and buy a new one. But I like old tools and I like to fix them if I can.

But that might change if I can't find a screw. Are your screws 90 thou in diameter?

I will go measure and see if any are that size. I have a small collection.

 

[Megar arc 5040dd]

I plan to try to reuse the parts and I'd like to fix the caliper if I can. The wise choice would be pitch it and buy a new one. But I like old tools and I like to fix them if I can.

But that might change if I can't find a screw. Are your screws 90 thou in diameter?

These are what I have. The 4 on the cutting board are names I don't recognize and cant really make out. the left 2 are missing pieces. The 7 in the middle are starrett and the one on its own is Brown and sharpe.

This starrett one is the only one with a diameter close to what you have measured. However the diameter measured across the tops of the threads measures at .121". I also noticed that the threads on all of them appear to be sharp and don't look like Acme like yours. Is it possible that your threads have worn down giving you both that flat profile across the top as well as the measurement you are getting?

These all came from ebay many years ago when I needed a pair of dividers for some layout work at the shop I worked at. When they told me to find something round to trace because the shop didn't have a compass I decided it was time to supply my own tools even if it was against policy. They also used taps as a center punch because they didn't have one of those either. Needless to say I didn't stick around there very long.

 

[Susquatch]

Is it possible that your threads have worn down giving you both that flat profile across the top as well as the measurement you are getting?

I considered this too. But the dead proof is the size of the through hole in the caliper leg. It's just slightly over 90 thou. So, no. The thread profile is deliberate.

 

[Megar arc 5040dd]

I considered this too. But the dead proof is the size of the through hole in the caliper leg. It's just slightly over 90 thou. So, no. The thread profile is deliberate.

I guess you could always try to single point thread it on the lathe

 

[jorogi]

But I like old tools

Hmmm......last time you had two words for me and they weren't nice. Damned double standards.

 

[Susquatch]

I guess you could always try to single point thread it on the lathe

I have thought about it. It would likely present challenges I have not handled before, and I don't have a steady rest that small. But it would probably be too hard on my ego. Better to just buy something. If all else fails, I might have a go at it though. I have not totally ruled that out. I'd have to buy some heavy duty depends and avoid eating off the floor for a few weeks if I do.

 

[Megar arc 5040dd]

I have thought about it. It would likely present challenges I have not handled before, and I don't have a steady rest that small. But it would probably be too hard on my ego. Better to just buy something. If all else fails, I might have a go at it though. I have not totally ruled that out. I'd have to buy some heavy duty depends and avoid eating off the floor for a few weeks if I do.

Think of the bragging rights!

 

[140mower]

I have thought about it. It would likely present challenges I have not handled before, and I don't have a steady rest that small. But it would probably be too hard on my ego. Better to just buy something. If all else fails, I might have a go at it though. I have not totally ruled that out. I'd have to buy some heavy duty depends and avoid eating off the floor for a few weeks if I do.

Prolly need a bigger jock as well....