Which VTF Scale are you using?

The 49 dollar one available on music direct. Not sure of branding, but it works well. Have the shure scale, but put away....

I have an old Bib mechanical gauge and an unbranded electronic gauge. Both work quite well.

I use the Audio Additives Stylus Force Gauge.  Relatively inexpensive, extremely  accurate and easy to use.  I also still have and will never part with my old trusty Shure SFG-2 that I bought in the 70s.  It's old school (i.e. not digital; all counterbalance mechanical), reasonably accurate and will never fail.  I keep it on hand in case the digital conks out and I have to order a new one. 

I have an Acoustech digital scale that was on sale for $30.00 regularly $50 from Music Direct.  I still have my trusty Shure I bought in the early 70’s. 

Bought an Acoustech digital, a few years back.      Works great.