Barometer 

 氣壓計 

Topinst offers line of high quality barometer for the most serious atmospheric analysis, as well as inexpensive options for the barometer for basic solutions. The barometer measures absolute pressure, differential pressure in respect to the atmosphere, and negative pressure. The various types of barometer we offer display readings in mbar, bar, kPa, MPa, mmHg, PSI, and mH2O, selectable depending on the sensor used.

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