Re: [ATM] which spherometer dial indicator tip

["Don Clement" <don_clement@charter.net>]

 Ruby ball (sapphire) tips can be found here:  http://tinyurl.com/34rehh

Don


>
> Hi Dominic,
>
>
>
> Not sure about metric dial indicators but AGD type gauges have a female
4-48
> thread at the end of the spindle.  There are a wide variety of tips that
can
> be threaded into the 4-48 thread. see:
> http://www.dialindicator.com/accessory_contact_points.php Also there
appears
> to be metric to inch converters for the tips. I would go with a spherical
> sapphire tip.
>
>
>
> Don Clement
>
> Running Springs, California
>
>
>
>
>
> >
> > Hi everyone,
> >
> > I am hoping someone might have some suggestion about which tip
> > to get for the shaft of a dial indicator to be used on a
> > spherometer. I have the Compac SH 524 (metric 0.002 mm resolution).
> > The shaft is a hollow metal dowel. I inquired about some more
> > common tips and was warned not to buy/use these on optical surfaces
> > because they are made of carbide, etc and are known to cause
> > scratches on glass. It was explained that there are nylon tips
> > for fragile surfaces, but then I was confronted with a lot of
> > possible shapes. At the same time, I am pretty sure I once read
> > about some EU and ANSI standards. Any suggestions or warnings what
> > to avoid?
> >
> > Has anyone made one? I thought of a using a 1.5 mm drill bit,
> > but that fit too loosely, and of course, the next size up won't
> > fit at all.
> >
> > Dominic
> >
> > _______________________________________________
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> >
>
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>

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