A ship's clinometer measures the degree of pitch and roll of the ship while under way. This wooden inclinometer measures 11”x 12”. It also makes a wonderful addition to your nautical home decor. It can help turn an area in your home or office into your own beach house and give you that coastal decor look and feel. They make great nautical gifts, a beautiful piece of coastal decor, are a nice piece of nautical art as well as being a great addition to your nautical design & your home decoration.