scale of measurement

NOUN
20 LETTERS · STARTS WITH S

scale of measurement is a valid 20-letter word worth 27 points in Scrabble and 33 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1C3A1L1E1O1F4M3E1A1S1U1R1E1M3E1N1T1
1 + 3 + 1 + 1 + 1 + 0 + 1 + 4 + 0 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 1 =27 PTS
DOUBLE WORD → 54TRIPLE WORD → 81
MEANING

What does scale of measurement mean?