Just for those that have it. MS Word 2010 has this scale built into its spellchecker/grammar checker. It is easy to use. Any of these scales are only correct if done by sentence first (correcting those first for readability) and then by paragraph. If you do this scale by paragraph only, you will get higher scores than normal since it takes in sentence structure, words and punctuation into the overall score.
It takes more time this way, but the writing will flow better, at times. Other times, for complex scene sentences, this scale is totally wrong.
Poetry cannot be done on this scale.
Just my