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dial indicator tips

@Canadium - I bought a cheap set on Amazon - like $14. Cheap ones work fine

same set you are showing - helped fix an indicator I was missing a tip on.

@YYCHM : they extend the indicator reach (like if you wanted to indicate a bolt hole or a narrow passage or can’t get the indicator in close. - also add angles and such.
 
If you want to indicate indentations, grooves, holes, etc the standard indicator point might not be adequate. Most indicators have a removeable point that can be replaced with different shaped points for this reason.
 
The set looks like some same size mostly extensions? Those are useful, I have some from KBC supposedly USA made like ebay screen grab below, but I'd put them at maybe 70% of a Mitutoyo grade. Asian might be worse but who knows. Threads aren't super crisp, knurling looks a bit shallow & incomplete. Minor cosmetics but I'm OCD. What that set doesn't show & is equally/more useful is different shoes or buttons or whatever the call the screw-on-the-end thingy's. Like a 0.375 or 0.500 flat is very useful for many alignment measurements like running down a shaft because its round surface on flat shoe (line tangent) vs round on round (point tangent). It doesn't matter what kind or diameter of round tip, its still a round tip.

Also check your DTI vs dial indicator that they have the same threads otherwise you cant mix & match like they suggest

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I used the same set. I got some US made stuff and... tips were missing ... so I added these.

They are not perfect but work. Main problem I can see if for some reason you use your indicator to measure distances and you use one part of the plunger vs another and indicator is in the tenths you may get different measure - i.e. the tips are not "ground" or "precision" they may have tiny flat spots.

However for "most" work they are great.

You can get them from aliexpress as well - cheaper and you can choose faster shipping (e-packet).
 
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