The Placom KP90N Planimeter is a design measuring instrument used to determine the area of an shapes from a plan or map. Featuring a 6-digit pulse count to measure the desired area, this method enables a large cumulative measurement of area up to 10m2. By using this pulse count it measures an area 100 times more than an ordinary planimeter. The roller operation allows for smooth measurements, typical accuracy of results is +/- 0.2%. The KP90N has mean value measurement, memory for cumaltive measurement, auto shift for are overflows and several easy conversions. Supplied standard with case and battery charger. The Placom KP90N has a 1 Year Manufacturer's warranty covering any defects in materials or workmanship.