The Aqua-Boy TEM-1 Textile Moisture Meter determines the residual moisture in yarn bobbins, fabric folls, filaments, fiber flocks, etc. The measuring principle of the Aqua-Boy TEM-1 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.