HT-904 is the first high-performance, digital moisture measuring instrument in the AT-SF-1 series of Moisture Meters that introduces foreign professional technology and is launched in CHINA. Without damaging the paper, the flat round head contact point (round head Ф7mm) can be used to measure the moisture content of various paper, cardboard, and corrugated cartons, and is especially suitable for measuring the moisture content of single pages of paper. The instrument operates quickly, has high accuracy, is small in size, easy to carry and lightweight, and can be carried around for rapid detection on site. It is an ideal instrument for testing moisture in the papermaking industry during the production process.