This is a super newbie question but I cannot seem to unscrew the contact tip on my 640-431 depth gage. I’m not sure if it even comes off but I’d like to see if I can put a pointed tip on instead of the flat one. Does anyone know if or how the contacts come off? Thanks.
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Starrett 640-431 640JZ changing contact
- Thread starter Codyyy
- Start date
- Replies 3
- Views 1,782
RJT
Titanium
- Joined
- Aug 24, 2006
- Location
- greensboro,northcarolina
Most indicators have a screw on tip. If it's knurled, just grab and twist. It may have some tread locker on it, but it should be removable. I would try needle nose pliers if you can't remove it with your fingers.
Eric M
Cast Iron
- Joined
- Nov 21, 2007
- Location
- Orlando, FL
Since what you have is basically a dial indicator attached to a base, any of Starrett's dial indicator tips should fit; metric-reading indicators take M2.5 threaded tips; inch-reading indicators take #4-48 threads. The plunger MAY have a cross-hole in it to allow you to loosen the tip without putting torque on the indicator movement.
