Pocket sized damp and moisture meter used to measure the moisture content in timber, paper, cardboard, and hard materials such as mortar, concrete and plaster. Moisture content is displayed as a percentage reading on the backlit LCD digital display. Will also measure the ambient temperature. Supplied in with a probe cover for safe storage when not in use.Auto power off. Low battery indicator. c/w 4 LR44 Coin Batteries. Measurement Range: Wood: 6-42%, Material: 0.2-2.0%, Temperature: 0-40degC. Accuracy: Wood: 1%, Material: 0.1%, Temperature: 1degC/2degF