2. analog
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VPI Classic III force gauge

My VIP Classic 3 came with a small digital force gauge, but when I try to set the VTA on the TT the gauge grab the stylus because this gauge is magnetized. I am a bit worried that my cantilever might break off if I use this digital gauge. Has anyone had any issues with this gauge? Also have you compared its accuracy with other gauges including the Shure gauge? One would think since VPI supplied this gauge it should be OK, but I don't think so.
almandog
dougdeacon
3,338 posts
 
Hogwash. If austenitic stainless steel was used, the manufacturing process would not "magnetize" it. Only two "processes" could result in magnetically reactive SS:
1) incompetent material specifications from VPI; or
2) competent material specifications from VPI that were ignored by the fabricator.

It's good that they're standing behind their product, but this would never have happened if reasonable process controls were in place.
kiddman
341 posts
 
VPI? Proper controls? Please.

To clear up the discussion, ALL metals will show some degree of magnetic behavior. All metal gauges will show some degree of this. Don't bother arguing about it, go to some textbooks.
dougdeacon
3,338 posts
 
Yes, all metals exhibit some degree of magnetic behavior. For that matter, all gases induce some degree of Brownian motion.

To build a practical VTF scale it's sufficient to eliminate most magnetic behavior, so avoid ferritic steels.

To use a VTF scale it's sufficient to eliminate most Brownian motion, so avoid measuring VTF outdoors on windy days.

:-)
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