Digital Watch Sports Waterproof Altimeter Barometer Compass

Measure atmospheric pressure and predict weather changes with this precision barometer. The 5.1 × 10¹⁸ kg column of air above us exerts pressure proportional to its weight. An aneroid barometer uses a sealed metal capsule that expands or contracts with atmospheric pressure, mechanically amplifying tiny movements into readable measurements.

Atmospheric Physics Measurement:

• Altitude measurement: pressure drops 12 Pa for every meter of elevation
• Weather prediction: falling pressure indicates storms, rising indicates clearing
• Barometric tendency: rate of pressure change over time
• Verify Pascal’s law and hydrostatic pressure physics

Weather is driven by pressure differences — this barometer gives direct access to the pressure field driving all meteorological phenomena.