Soil Moisture Meter Atago PAL-Soil has dual scales of Gravimetric soil moisture and Volumetric soil moisture. Save on time, labor, and material with PAL-Soil. A measurement only takes 10 minutes whether out in the fields or in the lab. In accordance with ISO 16586:2003 “Soil quality – Determination of soil water content as a volume fraction on the basis of known dry bulk density – Gravimetric.”