Masterjuggler
Plastic
- Joined
- Sep 25, 2014
- Location
- Nj, USA
I was helping to clean out the grandparents' house so they can move, and I found a few old Brown & Sharpe micrometers. One of them looks great, but the threaded chuck-like thing inside the sleeve is damaged. The threads themselves seem fine, but the chuck seems like it was bent and bent and opened with a screw driver at some point. I can screw the spindle in, but after about 1/4" it gets really tight.
The threaded chuck-like thing at the end of the sleeve and the thing that screws onto it. I assume it is to get the threads snug against the spindle without any play.
This is how far it goes in freely until it meets some resistance, then gets a lot harder to turn progressively over another 1/8".
Can anyone tell me:
1) What exactly is the purpose of the threaded-chuck, and why the heck isn't it just a threaded tube?
2) Is the threaded chuck separate from the rest of the sleeve or is it one piece? It looks like two pieces because I can see the ridge of the threaded chuck when looking from the frame side (the threads don't go all the way through). I tried removing it by tapping the ridge from inside with a flathead screwdriver, but didn't want to damage anything so I didn't do it too roughly.
3) Can I do anything to fix it? I'm going to make myself a spanner wrench at some point to remove the thimble cap and calibrate it, but it's not worth doing if the caliper is a piece of junk.
Thanks in advance.
The threaded chuck-like thing at the end of the sleeve and the thing that screws onto it. I assume it is to get the threads snug against the spindle without any play.
This is how far it goes in freely until it meets some resistance, then gets a lot harder to turn progressively over another 1/8".
Can anyone tell me:
1) What exactly is the purpose of the threaded-chuck, and why the heck isn't it just a threaded tube?
2) Is the threaded chuck separate from the rest of the sleeve or is it one piece? It looks like two pieces because I can see the ridge of the threaded chuck when looking from the frame side (the threads don't go all the way through). I tried removing it by tapping the ridge from inside with a flathead screwdriver, but didn't want to damage anything so I didn't do it too roughly.
3) Can I do anything to fix it? I'm going to make myself a spanner wrench at some point to remove the thimble cap and calibrate it, but it's not worth doing if the caliper is a piece of junk.
Thanks in advance.