vernier dial

12 LETTERS · STARTS WITH V

vernier dial is a valid 12-letter word worth 15 points in Scrabble and 18 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

V4E1R1N1I1E1R1D2I1A1L1

4 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 2 + 1 + 1 + 1 =15 PTS

DOUBLE WORD → 30TRIPLE WORD → 45

MEANING

What does vernier dial mean?