No Computer Required, Quantities are displayed on the screen of the Measuring Module which Displays Lengths, Counts, Areas, Perimeters, Take-outs, etc. The QuikRuler also Measures Curved lengths and Areas by Tracing. All Scales supported or Set Scale from Drawing. - 36 x 48 GTCO Roll-Up II and The QuikRuler Measuring Module - Includes Everything Required to Measure Blueprints in One Package - Digitizer Pad, Measuring Module, Digitizer Template, Pointing Device, Manual, all Necessary Cables, USB Cable to connect the Measuring Module to a Computer to Export Quantities to Excel if desired. The Roll-Up III also works with Digitizer Software when the Measuring Module is disconnected. Carrying Case not Included but can be bundled at a discounted rate. Footprint 41 in. x 56 in. Weight 8 lbs. Compatible with Windows 95/98/XP/Vista/7.