Placom KP 90N Digital Planimeter

Placom KP 90N Digital Planimeter


Placom Digital Planimeter KP-90N-Series with the most advanced functions and perfect reliability.

The most standard model of “Koizuimi Placom” N-Series has made the excitingly highest attainment in the history of Placom Digital Planimeter KP-90N ever made. Measuring capacity is remarkably enlarged. Measuring by 6-digit pulse count enables to measure 100 times larger accumulative area than ordinary planimeters. Easy calculations of Cumulative and Average Value Measurement.


  • Construction and civil engineering
  • Land developing planning, Machine designing
  • Datalanalysis in statistics
  • Architecture and interior designing
  • Forestry area, Ship designing
  • Medical research, Agriculture

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Key Features of Placom KP-90N Digital Planimeter

Measurement by 6 digit pulse count

This N-Series can measure the area by pulse count of 6-digits. This method enables a larger cumulative measurement of area (Up to 10m²)

Maximum cumulative measurement value of 10m²

With the measurement by 6-digit pulse count, the N-Series Planimeter can measure a larger area by 100 times than ordinary Planimeter.

The conventional planimeter has a maximum cumulative area to measure only 0.1m². If measurement value shows over 0.1m2 when measuring, the display is to be reset to “O”.

This requires to register the numbers of how many times these re-settings are occurred.

With the New PLACOM N-Series, there is no need of these troublesome procedures.

Easy conversion function of unit and scale

Placom KP-90N can convert easily the measured area value into a new area value in a newly desired unit and with a newly desired scale value.

Placom KP-92N and KP-82N can convert the unit between in² and cm²

Hold memory function

In cumulative measurement, this Hold Memory function is effectively used. If an error occurs in measuring, press C/AC key. Then last measured value is appeared by pulse count. Since previous measured values before error are stored, there is no need to another measurements from the beginning.

Automatic shifting of unit to upper unit

When the measured area value overflows the displayed figures of 8 digits, the measured area value is calculated and displayed by an upper unit. When the overflows is occurred in the uppermost unit, km², acre, the measurement can be continued by pulse count display.

Average value measurement

In order to get better result of measurement, Mean value measurement is recommended. This measurement can be easily done on this N-Series.

Measurement of an area with different lateral and longitudinal Scale.

Auto-power-off function for energy saving

Placom KP 90N Digital Map Measurer Technical Specifications:

Model Parameter KP-90N KP-92N KP-80N KP-82N
Type Roller Type Polar Type
With Computing Function Single Function With Computing Function Single Function
Display Liquid Crystal, 8-digit Figures
13 Symbols 6 Symbols 13 Symbols 6 Symbols
Symbol Batt-E, SCALE
Memo, Hold
cm2, m2, km2, in2, ft2, acre etc.
Memo, Hold
cm2, in2, etc.
Memo, Hold
cm2, m2, km2, in2, ft2, acre etc.
Memo, Hold
cm2, in2, etc.
Converting Function Unit and Scale value Unit(in2, cm2) Unit and Scale value Unit(in2, cm2)
Accumulated Measuring Value Maximum 10m2(Scale 1:1)
Measuring Range Maximum vertical width: 325mm
Horizntal roller rotating length: 30m
Maximum, with the pole put outside the pattern: 300mm in diameter
Maximum, with the pole put inside the pattern: 800mm in diameter
Accuracy Within +/-0.2%(Within +/-2/1000pluses)
Power Supply
  • Built-in NiCd Battery(rechargeable through AC Adapter)
  • AC Adapter 100-240V (Auto-power-off function is provided.)
Operating Duration Approx. 30 hours of continuous operation
Battery Charging Time Approx. 15 hours
Main Unit Weight 750g 780g
Accessories Supplied AC Adapter and Plastic Case

Download Brochure & Manual  for Placom Digital Planimeter




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