They were great at first but for $18 you get what you pay for. Even after 60 days they do not go out of scale. Every time I move the dial it's at 0.200 ZERO. I make ammo, and 45 ac is .473, so when it says .675, the last thing I know is I'm wrong by 2 thousandths, but it's a pain. So I ordered IGaging for $49 and I'm happy, so I actually spent $69. Dude usually SAYS IT. MAKE IT RIGHT THE FIRST TIME and you won't buy twice. If I try to be a CHEAP BASTER, I get what I deserve. There is no way to reset it to view it. It would be -.200, just 5-10 slides back and forth, and it would zero at 0.2.