Harneser or Harnesser: How To spell?
The word Harneser is misspelled against Harnesser, a noun meaning "One who harnesses."
Harnesser has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings harne & er which should not be misspelled with single 'S'
Wrong Spelling:  harne-s-er  Correct Spelling:  harne-ss-er 
Explore spell check of Harnesser to spell without errors.