In general, a nice good device for home use. Bought on the eve of repairs to measure the apartment and draw a project for the builders. In 1 hour, I measured the entire apartment from several angles, from 3 different points, in each room, the height, width and length (at the same time I realized how crooked the walls are))) And with a tape measure, I would probably only have enough strength for 1 measurement, and then it will do (and then the furniture does not fit and a right angle, not at all straight))) In general, I recommend buying, such a thing should be in every house, if this house is planned for even the smallest alteration.