RIEVTECH STUDIO SOFTWARE MANUAL 4.6.8.1.3 Arc Scale For the “ Arc Scale ” , there are three differences with the “ Horizontal Scale ” . The options “ Starting Angle ” and “ End Angle ” are added in the “ Angle ” property box. The option “ Main Scale Length ” is added in the “ Scale ” property box. The option “ Position ” in the “ Scale ” property box is different. The option “ Main Scale Length ” is shown as below. The start angle and the end angle can be set for the arc scale in the “ Angle ” property box. The settings and the effect are shown as below. 263