It shipped pretty quick (had it in 6 days including a weekend) and can confirm that it does come with a calibration certificate, mine was within +/- 0.1%. Build seems decent and if you register it (which costs nothing) they extend the warranty by two years. The only caveat is that it's built to even inch pounds so the cardinal NM markings are fractional. ie. when one scale is 35"# the other is 3.95nm.