Checkline TMT-425 [TMT-425-USB-WOE] Digital Textile Moisture Meter With USB Output Without Electrodes, 0.3% To 26.0% Moisture Content. The new digital textile moisture meter TMT-425 is the next generation of textile moisture meters. It determines the moisture content of textiles, natural materials, synthetics and yarn during the production process within seconds. The water content of textiles and yarns influences the elasticity and tensile strength directly. This textile moisture tester has all textile curves stored inside and does not require any look up tables. Just select the appropriate moisture curve and start measuring. By this, maximum accuracy is guaranteed.