Excerpt: I'm very happy with the measurements this scale provides. They seem to be accurate. I think the extra bucks I spent for the 514C were worth it.<br /><br />It's a bit finicky. You need to turn on the power first. Second, wait for the display to show 0 and then pick up the bar. Third, press the button on the bar to tell it whether you're user 1 or 2 etc. Fourth, step on the scale. You can't do these 4 things in any other order.