Ball Micrometer

[Ol 55]

Before I rush out and buy one can anybody tell me what is the dia of the ball on your one, I would like to measure down to 17?
Or do I make myself a stand to use a dial indicator. Main criteria is it is imperial.
Gary

[Rabbitz]

I hope I have misread this, but you need a micrometer to measure your balls?

Crikey.

[billsshed]

Had this a few years now. I use it for jacket thickness measurements. It will NOW do 17 cal. The ball measured .175" when new but 30 seconds in the lathe with some fine wet / dry brought it down to.169"
I think Sinclair's do a nice one out of the states.

Sent from my SM-G960F using Tapatalk

[Ol 55]

Had this a few years now. I use it for jacket thickness measurements. It will NOW do 17 cal. The ball measured .175" when new but 30 seconds in the lathe with some fine wet / dry brought it down to.169"
I think Sinclair's do a nice one out of the states.

Sent from my SM-G960F using Tapatalk

I have one of those somewhere didn't rate it as it tended to be inconsistent, maybe I should try and find it though I have a feeling I threw it in the bin.
Ol 55

[billsshed]

I have not found it inconsistent, if anything it has proved very reliable. You do have to keep it clean and free from anything that would gum it up. It is defiantly good to the .001”. It is the only ball / digital micrometer that I have.
My projectile mics are to the .0001.

Bill

[Ol 55]

I made it my business to find my green sinclairs calipers/ ball thickness gauge, found the readout jumping all over the show would not zero or measure any movement on the spindle and this is why I didn't use it any more as it is obviously faulty.
Cheers
Ol 55

[kickinback]

Just use a dial indicator on your neck turner.


Sent from my iPad using Tapatalk Pro

[Ol 55]

Just use a dial indicator on your neck turner.


Sent from my iPad using Tapatalk Pro

That's how I've always done it but the only problem is I don't want to move the cutter I'll build something to hold a mandrel and dial indicator.
Piece of piss just need to find the time.
Gary

[JasonF]

I have one of these that I never use if it would help...

https://www.sinclairintl.com/reloading- ... 36959.aspx

[Ol 55]

I have one of these that I never use if it would help...

https://www.sinclairintl.com/reloading- ... 36959.aspx

PM sent
Gary