For a quick and non-destructive assessment of the moisture content of wood and building materials. The display shows the weight percentage in relation to the dry mass of the material. The testo 616 makes it easier for anyone who needs to monitor drying processes of floors, walls, and surfaces. It includes integrated material characteristics for softwood, hardwood, particle board, anhydrite screed, cement screed, lime sandstone, aerated concrete, concrete, hollow bricks, and solid bricks. The non-destructive moisture measurement is particularly advantageous for precious woods.