Metric Dial gauges

[mike4]

I recently purchased a Mituyo 1160 for checking the runout on a transmission shaft , it has divisions on 0.01mm which equates to around 0.0003 thousands of an inch , does anyone know the thread used for mounting this on a rod. as the grubscrew is missing and just has a soft plastic plug to keep the crap out.

Thanks in advance.
Michael

[jlevie]

As a guess, it will be a metric thread.

[davidh]

do you have a local hardware store that carried a good assortment of screws and bolts? that's where I go when I have a female thread I need to identify. they are very good about it as I am a customer but they are good anyway.
just what I do. . . . . . .

[Arthur.Marks]

It's odd how that feature isn't dimensioned on the manufacturer's drawings I find. That said--and not owning one of these particular indicators--my guess would be M6. Why? Because the holding bars are offered in either 6 or 8mm diameters. M5 is a relatively uncommon thread. M4 is probably a bit dainty. M6, though, is extremely common and matches the smaller holding bar diameter. So does it look about 1/4" size?

[Paul Alciatore]

Yes, the best way to ID it is with a known screw. If you don't have any metrics in stock, you should get at least a small assortment to have on hand. I assume you have some English thread screws around, or do you?

do you have a local hardware store that carried a good assortment of screws and bolts? that's where I go when I have a female thread I need to identify. they are very good about it as I am a customer but they are good anyway.
just what I do. . . . . . .

[mike4]

Thanks for the suggestions , several of which I have tried , including looking up the specs, none of the threads which I have do fit , and I wont force it as I value my measuring tools.

I have ordered a bar from Mituyo , when it arrives I will note what thread pitch and dia it is and put that in the box with the indicator.
Michael

[Mike Burch]

Not meaning to hijack the thread, but just yesterday I saw an ad for a metric dial guage that had dial divisions of 0.001mm. (For the metrically challenged, that's just under 0.00004 inches.)
I suspect that might be a bit ambitious for my skill level.

http://www.trademe.co.nz/business-farming-industry/industrial/manufacturing-metalwork/lathes-accessories/auction-688244520.htm

[mike4]

This one reads to 0.01mm which is around 0.0003 of an inch , good enough for the shaft which I am checking.
Michael

[The Artful Bodger]

If the instrument is intended for possible mounting on photographic bits and pieces it might be 1/4" Whitworth.

[Peter.]

This one reads to 0.01mm which is around 0.0003 of an inch , good enough for the shaft which I am checking.
Michael

Sorry to correct you but it's actually almost 0.0004" (0.000394")

[mike4]

Why do people have to get pedantic with measurements , I did say it was around 0.0003 the 0.000094 doesnt really matter in most daily used equipment and if it did then I would purchase an electron microscope and a set of similarly scaled scraping tools to remove a few atoms which may be forming a ridge on the surface.
Perfection is not something to strive for in many areas , if a part fits and works as well as lasting, that is what really matters , sometimes that last few tenth's or hundreths of a thou can push the repair time into an area where customers can and have refused to pay for excessive time spent .

If a part will allow a machine however large or small to be put back into service where it earns dollars for the owner and it lasts longer than the original , then that is what I look to acheive .

I do most of my work for money and have built a reputation for quick and lasting repairs over quite a few years .
I can work to the fine tolerances that many here take pride in acheiving but if that is not required then why spend 4 - 6 hours on a part with the constant risk of scrapping a weeks work in total just for someone elses gratification..
Michael

[Georgineer]

Michael,

You might like to re-read your original post (#1). Does it really say what you meant it to?

George

[Peter.]

Why do people have to get pedantic with measurements , I did say it was around 0.0003 the 0.000094 doesnt really matter in most daily used equipment and if it did then I would purchase an electron microscope and a set of similarly scaled scraping tools to remove a few atoms which may be forming a ridge on the surface.
Perfection is not something to strive for in many areas , if a part fits and works as well as lasting, that is what really matters , sometimes that last few tenth's or hundreths of a thou can push the repair time into an area where customers can and have refused to pay for excessive time spent .

If a part will allow a machine however large or small to be put back into service where it earns dollars for the owner and it lasts longer than the original , then that is what I look to acheive .

I do most of my work for money and have built a reputation for quick and lasting repairs over quite a few years .
I can work to the fine tolerances that many here take pride in acheiving but if that is not required then why spend 4 - 6 hours on a part with the constant risk of scrapping a weeks work in total just for someone elses gratification..
Michael

Well I do apologise Mike, it wasn't my intention to ruffle your feathers in such a way. I'd ask you to consider though that your conversion factor can be applied to millimetres as easily as hundredths of a millimetre. Now you have a ten thou error.

[NiftyNev]

Holding bars I have seen are either 6mm, 8mm or 1/4". Wouldn't think it would be that hard to work out the size of such a simple thing. Nev.

[NiftyNev]

136568 - Holding bar ط8 mm, L81 mm 21AAA168 - Holding bar ط8 mm, L42 mm That's what I can find so far. Nev.