That's well and good, but with electronics you will eventually need repair/warranty work sooner or later. It is interesting regarding sample variation though. I've tried 3 different Geovids over the years and none performed anywhere near spec, and one of them wouldn't range anything when...
Calibrate and zero before every session for sure. Calibrate every powder charge.......no way. I also let mine warm up about 15-20 minutes before starting as well.