Stylus force digital scales

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

cleeds
814 posts
09-25-2017 9:45am
Also, if you use a dynamically balanced arm, VTF will remain constant even while playing a warped record.

That statement is not true. Most dynamic balancing is applied with a spring which is designed to provide a restorative force to the arm. The actual tracking force at the stylus will be unpredictable and variable depending on the cartridge compliance, size and gradient of the warp and speed of the record. The competing forces are far more complex - it would be almost impossible to provide a constant tracking force over a record warp.