Thursday Morning Riddle

I am found on a fish; which I might also weigh;
I’m the shrinking in maps; I determine your pay;
When one climbs up a wall; I am notes you might play;
And your sign, if you’re born on a mid-autumn day.

Who am I?

UPDATE: Riddle solved by Asher. See comments for answer.

2 Responses to “Thursday Morning Riddle”

  1. Asher Says:

    Scale

  2. Bill Says:

    SCALE is correct. Way to go, Asher!

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