Watmeter or Wattmeter: How To spell?

The word Watmeter is misspelled against Wattmeter, a noun meaning "An instrument for measuring power in watts, -- much used in measuring the energy of an electric current."

Wattmeter has double "tt" is mispronounced as "t"
Remember double 'TT' in between the strings wa & meter which should not be misspelled with single 'T'
Wrong Spelling:  wa-t-meter 
Correct Spelling:  wa-tt-meter 
Explore spell check of Wattmeter to spell without errors.

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