Eirometer or Airometer: How To spell?

The word Eirometer is misspelled against Airometer, a noun meaning "A hollow cylinder to contain air. It is closed above and open below, and has its open end plunged into water."

Word begins with consecutive vowels 'AI' followed by alphabets 'rometer' is misspelled as 'EI'
Wrong Spelling:  ei-rometer 
Correct Spelling:  ai-rometer 
Find more incorrect spellings of Airometer to spell right way.

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