RIEVTECH STUDIO SOFTWARE MANUAL “ Arc Scale ” can display the value of a fuel meter, a speed meter, and other display devices. The “ Round Scale ” can display the revolutionspeed, the angle and other parameters. 4.6.8.1General 4.6.8.1.1 Horizontal Scale First, the option “ Horizontal ” is selected. Then you can do other settings for the Horizontal Scale component. 258