AgraTronix Wile [07126] Cotton Moisture Tester. According to agricultural nutrition experts, the single most important factor influencing the quality of grain, hay and silage is moisture. Moisture management is a continuous process that requires the appropriate measuring tools. Protect your investment by testing moisture content before, during and after the season accurately and quickly using AgraTronix Moisture Testers. Includes: 07251 Probe and 07126 Cotton Tester Manual.