• Easy to use digital instrument to help identify water problems before major structural damage
• LCD indicator lights clearly show moisture content from as low as 7% to high of 35%
• Fixed fine-needle probes easily insert slightly into wood surface - leaves no visible marks
• Digitally analyzes moisture content with electro-magnetic resistance, accurate to +/- 1% content
• Compact size fits in pocket, works with other cellulose-type materials; 9V battery included

Also, reat tool for checking firewood, etc for proper dryness. Dimensions: 5-1/4"L x 1-3/4"W x 7/8"D; 4 oz.