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Sigma KEE - Altimeter
KB Term: 

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A Device that measures the vertical distance to the some reference point of the surface below. This may be the mean sea level or the actual surface of the earth.
Relationships      
Parents 测量工具 Any Device whose purpose is to measure a PhysicalQuantity.
Children 绝对高度计A type of Altimeter that measures vertical distance to the surface below, using radio, radar, sonic, laser, or capacitive technology.
 气压高度计A type of Altimeter which measures vertical distance to the mean sea level, using pressure level and calculated according to the standard atmosphere laws.


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