ACI-72S Protractor shows the adjusted angle of the horizontal saw used in wood cutting works with a multi-turn potentiometer. It is not affected by power cuts. It shows the manual angle change during a power outage, without the need for re-adjustment when the power is restored. It is a preferred product due to its practical use and its size suitable for industrial use. With its rubber key structure, it prevents the tearing and wearing problems that are frequently encountered in the devices on the market.