Weatherglas or Weatherglass: How To spell?
The word Weatherglas is misspelled against Weatherglass, a noun meaning "An instrument to indicate the state of the atmosphere, especially changes of atmospheric pressure, and hence changes of weather, as a barometer or baroscope."
Weatherglass has double 'ss' in the end mispronounced as 's'Remember double 'SS' appears in the end of this word which should not be misspelled with single 'S'
Wrong Spelling:  weathergla-s  Correct Spelling:  weathergla-ss 
Explore spell check of Weatherglass to spell without errors.