REED Instruments R6013 Pocket Size Moisture Detector Measuring Ranges: Wood: 6 to 44% Moisture Content; Materials: 0.2 to 2.0% Moisture Content Accuracy: Wood: 1%; Hardened Material: 0.05% Detects moisture in sawn timber, sheet rock, cardboard, plaster, concrete and mortar Compact size with belt clip and durable plastic housing Includes protective cap and batteries