3 in 1: 1.Measures environment temperature. 2.Measures the moisture level of sawn timber. 3.Measures hardened materials. Introduction: This instrument can be used to measure the moisture level in sawn timber (also paper、 cardboard) and hardened materials (mortar、concrete and plaster). It displays the moisture level directly. In addition、it can also measure environment temperature. It is portable and very easy to use. Dimensions: 3.15 in x 1.57 in x 0.79 in (8.0 cm x 4.0 cm x 2.0 cm) Weight: 1.62 oz (46 g)