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KOSO Air Density Meter

KOSO Air Density Meter
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Optional Slide Rule Gauge
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A must have tool for jetting shifter karts, Rotax or anything that uses a Mikuni, Keihin or Dellorto carb! The Air Density Meter is a great tool for serious engine tuners. It could help you determine if the jetting or fuel mapping should be adjusted. Altitude, temperature and atmospheric pressure can affect quickly the performance of the engine. Our meter will instantly tell you if the condition has changed so the proper changes can be made on the engine. This is a must for performance enthusiasts since it will help get the extra horsepower out of the engine or it could even save the engine from bad damages.
Add the optional Slide Gauge to estimate the jet as the air density changes.
Digital air density in % Display range: 50% ~ 150%
Will blink to warn at over-range
Display unit: 1%
Air density scale in % Display range: 70% ~ 130%
Display unit: 1%
Warning Light Warning light will come ‘’ON’’ if the air density goes 5% higher or lower than the reference point.
Barometric pressure Display range:


  • hPa: 500 ~ 1150 hPa
  • mmHg: 375.0 ~ 862.5 mmHg
  • inHg: 14.76 ~ 33.95 inHg

Display range:

  • hPa: 1 hPa
  • mmHg: 0.5 mmHg
  • inHg: 0.1 inHg
Air temperature Display range: -20.0 ~ 80.0ºC (-4.0 ~ 176.0ºF)
Will blink to warn at over-range
Display unit: 0.1ºC (ºF)
Battery remaining capacity Display range: 4 – stage indication
Warning range: Will blink to warn the battery power is LOW
Battery cell CR 2032
Effective temperature range -10 ~ 60ºC (14 ~ 140ºF)
Meter specification JIS D 0203 S2
Meter Size (W x L x H) 87.2 x 44.2 x 20.85mm
Meter weight


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