Stylus force digital scales

@lewm funny thing is I even find this with audiophile approved scales with non ferrous pans. They record exactly the same with a static weight like a screw but once I load them with a cartridge they’re all over the place. Could it be that the strong magnets in a cartridge affect the mechanism not just the pan? Anyway I trust the design of the Rega (just like the cartridge man scale I owned before, although that was really prone to breaking down due to its battery design) and it’s one thing I no longer need to worry about

Thanks chakster, lewm and folkfreak, very informative.
As folkfreak points out, even scales with non ferrous plates can have inaccurate readings due to strong magnets of MC carts affecting the whole mechanism. That would explain little increase in values with my DS-3, I strongly believe now.
I will try the plastic Rega scale, thanks again for great input.

lewm

... gravity is a constant for any particular location on earth, however, actual VTF will vary depending upon where the tonearm is located in its vertical arc.  This happens when you play a warped LP, for example

Varying VTF while playing a warped record is the result of dynamic forces. What we're talking about here is static VTF, which does not "vary depending upon where the tonearm is located in its vertical arc."

Also, if you use a dynamically balanced arm, VTF will remain constant even while playing a warped record.

lewn....speaking of azimuth.....In my experience, accurate azimuth is even more important than is exact vtf