4 wood types can be measured: You can choose and measure the four wood types of wood, A, B, C, D depending on the density of being measured. M1---- Yuzu, Wallet, Ginleaf Wood, Willow, Cedar etc.; M2------ White Poplar, Elm, Cherrywood, Carrade, Walnut etc.; M3---- -- Rubber Wood, Brazilian Walnut, Takami Beans, Cork, etc. M4------ Building Materials Wide range of materials that can be measured. This product is primarily used to measure the water content of wood, but it can measure wood and fibers (e.g. bamboo, cotton flowers, cigarettes, paper, cartons, etc.)