Compases or Compasses: How To spell?
The word Compases is misspelled against Compasses, a noun meaning "An instrument for describing circles, measuring figures, etc., consisting of two, or (rarely) more, pointed branches, or legs, usually joined at the top by a rivet on which they move."
Compasses has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings compa & es which should not be misspelled with single 'S'
Wrong Spelling:  compa-s-es  Correct Spelling:  compa-ss-es 
Find more incorrect spellings of Compasses to spell right way.