Alvin - Double Readout Plan Measure - Alvin Double Read-Out Plan Measure is ideal for blueprints, map scaling, and drawing. Determines distances in miles or kilometers on maps and plans according to scales indicated on dial. Alvin Double Read Out Plan Measure assures precision measurement forward or backward and follows curved lines. Precision metal gears are reset by revolution counter. Convenient handle for easy maneuverability. The Double Read-Out Plan Measure includes two large, easy-toread dials with unbreakable plastic faces. White dial graduated in inches and centimeters (36in = 92cm). Yellow dial graduated in +in, +in, 1/8in, and 1/16in to the foot. Includes leather-like vinyl pouch for protection. Alvin is one of the primary sources for drafting supplies and drawing equipment in the country. Creative Coldsnow is a pround retailer of Alvin graphic arts, drafting and fine arts products.