do you need a calibrated tamper
This super smart tamper will give you just the right amount of pressure needed to pull shots like a pro. Espro's must-have tamper is calibrated to click at 30 pounds of pressure and measures at 53mm or 58mm in flat or convex styles.t's a great idea. The first time my wife used the calibrated tamper she said, I would have never pressed that hard.. It's a great training tool for those who want to learn a proper tamp and a great aid for those who don't, but still want a good shot. There's no question about the quality of the product.