Say grade calculated and lengths measured (8)

I believe the answer is:

yardages

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'lengths measured' is the definition.
I can't tell whether this definition defines the answer.

'say grade calculated' is the wordplay.
'say grade' anagrams to 'YARDAGES'.
But, I'm not clear how the anagram is indicated.

'and' is the link.

Can you help me to learn more?

(Another definition for yardages that I've seen is " Charges".)

I've seen this clue in the Sydney Morning Herald.

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