What about Redding #2 master scale? Not any better than M5???
As I have posted on a related thread:
I use a tuned Redding. It is quite ugly and I couldn't sell it to anyone. I use the Redding as it is wonderfully sensitive. Reddings however have linearity issues. They tend to read heavy by about .1% per 100 grains past 150 grains. While not a concern for powder charges, Ohaus scales like the M5 and D5 rarely have such linearity issues when I am finished with them.
Scott Parker