any ideas which scale is good to use as a reloading bench scale
a good scale isn't. I use mine under three flouresent lights all the time. I more wor less worry about house current fluctuations and a hot or cold draft than the lights.I've always read that digital scales are influenced by UV lighting, and are subject to "drift".
I have the same unit that Mark linked.
I've experienced this drift when separating projectiles by weight many times...so i stick with a beam for powder measure.
I use the lee dippers for the bulk of a charge, then trickle and tweezers to come up to spec.
Slow, but accurate.