non-magnetic mechanical stylus force gauge

This is the official answer from Shure if interested

http://shure.custhelp.com/app/answers/detail/a_id/3200/kw/sfg-2/session/L3RpbWUvMTMyMzc4MjI4Ny9zaWQvNlBVQWh1TGs%3D

Copy / paste:
Q:Can the SFG-2 be used with moving coil cartridges, or only with moving magnet cartridges?
A:We only speak for Shure cartridges - all are moving magnet and work well with the SFG-2.

Q:It is my understanding that the magnets in moving coil cartridges are powerful enough to attract the stainless steel balance beam of the SFG-2 and produce incorrect readings.
A:This is feasible, though we have never tested the theory. Most phono cartridges use Mumetal for the cartridge body; MuMetal acts as a magnetic shield, thus shielding the internal mechanism from outside magnetic influence and vice versa.
FYI - Stainless steel has no, or very slight, magnetic properties.

As has been pointed out here for many years, that canned response from Shure contains more errors and false assumptions than facts.

As Tobes asked, why buy a cheaply made, inaccurate tool when for very little more money you can buy a decently made tool that's more reliable and more accurate?

Yes, Dougdeacon, I guess you are correct, it makes sense to look at digital ones.
Thank you

The reason I still occasionally use mine is to check on the accuracy of one of my digital gauges; I have 4 if I remember correctly. At times they have been wildly inaccurate. I question whether a complex device like a digital gauge can be considered more reliable than a simple balance like the Shure; I have had mine for decades. On the other hand one of my digital gauges is defective, it runs down the batteries even though it is shut off. It carries the name of a famous audio company and I got it as a dealer for them; when I informed the importer it was defective he didn't bother replying. It APPEARS to be identical to one that can be bought direct from China for under $20 rather than the $150 it retails for here. I had another that cost about the same and it was also identical. My Technics gauge stopped functioning years ago. I have a friend who is a professional audio technician who is obsessive about TT set up and he uses a Shure. Will the Shure measure down to 1/100 gram? No, but I have never found that minute variations in tracking force were significant. But then I don't alter my VTA for each record either.

Yes, thanks, I see the point.
I think this is also the case (at least for me) when simpler is better :)
Regards