Diametraly or Diametrally: How To spell?
The word Diametraly is misspelled against Diametrally, an adverb meaning "Diametrically."
Diametrally has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings diametra & y which should not be misspelled with single 'L'
Wrong Spelling:  diametra-l-y  Correct Spelling:  diametra-ll-y 
Find more wrongly spelled words of Diametrally to spell it well.