Digital scales have their quirks, and sometimes very poor UX. For mine, the calibrate button is placed in a way that makes it hard to depress without putting pr

Digital scales have their quirks, and sometimes very poor UX. For mine, the calibrate button is placed in a way that makes it hard to depress without putting pressure on the top of the scale - which kind of defeats the point. An analog scale will not have such a quirk - there will be a single slider or knob that can be turned without affecting the system. Mechanical buttons: sure, if you're talking about those junky, flat momentary push-buttons then yeah - they will go out of service after a number of presses. But, a proper mechanical push-button or radio button, such as on old radios and on industrial machinery? Basically indestructible. They could likely last a century, and if they go bad, you can replace them because they are generally possible to service.