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.
The altimeter measures the height of the glider above a given atmospheric pressure level by measuring atmospheric pressure in flight. Since the altimeter is the only instrument that gives altitude information, the altimeter is one of the most important instruments in the glider. The altimeter is a simple aneroid barometer that measures pressure at its current location.