KP 90N Digital Planimeter allows you to take area and line measurements from maps and other sources with accuracy within +-0.2 percent.  All are suitable for a wide range of applications, including construction and civil engineering work, land development planning, agricultural and forestry work, and as teaching devices in schools.

Offered in a roller-type model this planimeter features a unique 6-digit pulse count operation that permits cumulative measurement of areas up to 10m-100 times the measuring capacity of ordinary planimeters. Enhanced with advanced micro-processors for accuracy, this instrument is ideal for many applications where precise large area measurements are needed, such as in civil engineering, surveying, forest management, mapmaking and agriculture. Other features include hold and measuring control, clear liquid crystal digital readout, and scale readings in either Metric or English. Comes packaged in a plastic carrying case with AC adapter (battery included) and operating instructions.

• Type: Roller Type With Computing Function
• Display: Liquid Crystal, 8 digit figures, 10 symbols
• Symbol: Batt-E, SCALE, MEMO, HOLD, cm, m, km, in, ft, acre
• Converting Function: Unit and Scale value
• Accumulated Measuring Value: Maximum 10m (scale 1:1)
• Measuring Range: Maximum vertical width: 325mm
• Horizontal roller rotating length: 30m
• Accuracy: Within +-0.2% (within 2/1,000 pulses)
• Power Supply: Built-in Ni-Cad storage battery (rechargeable AC adapter) AC 120V (using the supplied AC adapter) (provided with auto power-off function)
• Operating Duration: Approximately 30 hours continuous operation
• Battery Charging Time: Approximately 15 hours
• Main Unit Weight: 750g
• Accessories: Supplied AC adaptor and carrying case