Mettler digital lab scale balance analytical PE360 PE 360 g 1 mg lab deltarange

Used Mettler digital laboratory scale model PE360- 360 gram maximum with 0.001g (1 mg) increments (up to 30g) or 10 mg increment up to 360g. tested with 20g weight. the result (20.000 is pictured). Upon plug in the unit shows no sign of life during first 10 minutes. then start blinking for 1 minute or two. then show "off" message. after this it starts to work as it should be. If not satisfied. You can return this unit within 30 days for a full refund minus shipping. Lot ulstnewleftfartop