Weeghboard or Weighboard: How To spell?

The word Weeghboard is misspelled against Weighboard, a noun meaning "Clay intersecting a vein."

Word contains consecutive vowels 'EI' in between alphabets w & ghboard is misspelled as 'EE'
Wrong Spelling:  w-ee-ghboard 
Correct Spelling:  w-ei-ghboard 
Find more incorrect spellings of Weighboard to spell right way.