The Triplett MS150 measures moisture content in wood (5 to 50%) and other building materials (1. 5 to 33%). Use pinless measurement (6 to 99. 9%) for non-invasive testing. The built-in Low, Medium, and High icons help you quickly indicate moisture level. There's also an audible beeper indicator that increases in speed as the moisture level increases for easily scanning large areas. A Lock button freezes measurement on screen for hard to see areas. The MS100 is an ideal tool for home inspection, water damage restoration, lumber yards, painting, paper mills, textile, clothing manufacturing, and other industries.