Is your RCL meter working fine?
As far as I know, yes it works. R agrees with FLuke and Keysight 1252, and Shannon's tweezers. C agrees with Shannon's Tweezers.
I zero it with the clips open to where it alternates between 0.0 pF and L on Cp.
Not sure if it would have been smarter to use the money for the Deere or if it is "better" than the Tweezers, but since I am a wathcmaker, I like toys and I like to confirm measurement instruments (which I know is different than calibrate). In my old life as a statistician, the motto was "if you can't be right, be consistent".