1 A normal pregnancy lasts about 40 weeks and is grouped into three trimesters.  Symptoms of early pregnancy include the absence of menstrual periods, breast changes, tiredness, nausea, mood swings, or other symptoms.
What is ENCODING ALTIMETER? An altimeter designed for automatic reporting of altitude to air-traffic control. A special encoding disk within the instrument rotates in response to movement of the aneroid capsules, and transmits a signal which is amplified, fed to the aircraft. ALTIMETER.
An altimeter or an altitude meter is an instrument used to measure the altitude of an object above a fixed level.The measurement of altitude is called altimetry, which is related to the term bathymetry, the measurement of depth under water.he greater the altitude the lower the pressure. When a barometer is supplied with a nonlinear calibration so as to indicate altitude, the instrument is called a pressure altimeter or barometric altimeter.