Very Specialized B&S .500" Micrometer: Can You ID the Purpose, Please?

[wlwhittier]

Flea Market find...for $1.

On a .500" frame, but probably purpose built in the shop. Functionally, it can only open to .375". At that point the spindle disappears behind the throat.

Any wisdom about this Brown & Sharpe mic will be gratefully received, and acknowledged!

Thanks, Warren

 

[mmcmdl]

Maybe for checking pipe or tubing thickness . Just a WAG .

 

[darkzero]

Agreed, seeing the round anvil & 1/2" capacity makes me think the same, for measuring tubing/pipes.

I have a Starret 576 & that's what it's for. Round anvil & also 1/2" capacity. I never use it. Just got it cause the small size was cute & it was in excellent condition. Feels weird to call a micrometer cute, forgive me.

576XR Rounded Anvil Micrometer

The Starrett 576 micrometers are extremely useful for measuring the wall thickness of parts such as solid and split bearings, tubing, sleeves, collars, rings, various cylinders, and also measuring from the inside of a hole to an edge 0-1/2" Range, .001" Grad, Ratchet Stop, Carbide Spindle.

www.starrett.com

 

[benmychree]

Tin can seam micrometer?

 

[Nutfarmer]

Benmychree hit it right . 22 years making ends for the can industry it is very common.

 

[Nutfarmer]

It is used to measure the seam of an end of lid of a can after it has been installed or seamed on a can.

 

[Silverbullet]

YUPP can lip , I have one too.

 

[benmychree]

Also used to be used for measuring flat head Ford floating rod bearings, and tubing wall thickness.

 

[Nutfarmer]

Glad to see Sliverbullet posting. How has the back been?

 

[KBeitz]

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