Planix 7 Roller Planimeter
Quickly and accurately compute area of any shape. 8-digit, LCD readout. Cordless operation. Multiple measurement averaging. Rechargeable batteries. All come complete with A/C charger, batteries and case. Planix 7 Roller Planimeter accurately measures large areas (118 x 11.8 in. or 300 x 30cm). 2 lbs. Accuracy better than +-0.2%.