It is delivered in a small plastic tube case with an information note. The device is simply put off and then pressed the button - super easy. The display is not in percentage, but indicates a value from 0 to 100 to. Here it must be interpreted differently depending on the material. Simple experiments with guaranteed dry wood or dry stones then show already, from when it is really humid. Values higher than 60 the case is clear. Caution: metal in the wall or in the timber it comes to higher ads that do not match then (can). Do not touch on the ball, while being measured ;-) The measurement does not take place on the contact resistance between two pins but electrostatically, so even non-destructively. This comes in handy, for example, with painted walls. Definitely a strong buy recommendation, the higher price is justified in any event.
