Abstract: A grain moisture meter and/or a meter for measuring grain bin temperatures, comprises a half-wave pulse oscillator with pulses connecting to the outer shell of a grain container. Pulses pass through the grain and through a central electrode and the signals are amplified and fed to a meter to read the moisture content. A thermistor is in circuit to adjust for variations in temperature of the grain. The device can be adjusted to test grain by three methods. Firstly, it can given an indication of dryness, toughness and dampness to a farmer in the field when combining. Secondly, by use of charts or graphs, it can be used to identify each point on the scale giving an accurate determination of the moisture content of any grade above number four grade and thirdly, by the use of other charts or graphs, accurate readings of any grain grade can be ascertained.