The Aqua-Boy TEM-1-HM Textile Moisture Meter with 205, 207 and 213 Electrodes is used to determine the residual moisture in yarn bobbins, fabric folls, filaments, fiber flocks, etc... The measuring principle of the TEM-1 Aqua-Boy Textile Moisture Meter is based on the electrical conductivity of the material which always bears a fixed relation to the moisture. All changes in resistance inside the measuring ranges of interest are sufficiently pronounced to ensure a high degree of accuracy for the readings obtained with the TEM-1. The electrical indicating accuracy of the TEM-1 is +/- 0.1% whilst the reproducibility is +/- 0.2% referred of the absolute readings on the meter dial.