Measurement Ranges: 5-70% for wall; 5-70% for masonry; 5-75% for soft wood; 5-75% for hard wood. Measurement Accuracy: 4% Display Resolution: 0.1% For wall and masonry: green = 0~41.9%, yellow = 42~52.9%, red53% For wood: green = 5~11.9%, yellow = 12~15.9%, red16% NOT suitable for measuring plasterboards, metal and cloth Proster Wood Moisture Meter Pinless Moisture Meter Add To Basket Wood Moisture Meter Add To Basket Wood Moisture Meter Add To Basket Wood Moisture Meter Add To Basket Pinless Moisture Meter Add To Basket Wood Moisture Meter Add To Basket Customer Reviews 4.6 out of 5 stars 500 4.4 out of 5 stars 4,226 4.4 out of 5 stars 4,226 4.4 out of 5 stars 4,226 4.6 out of 5 stars 500 4.3 out of 5 stars 26 Price 31.9031.90 15.9915.99 15.9915.99 16.9916.99 30.9930.99 24.9924.