Measure used for comparison (9)

I believe the answer is:

yardstick

(Other definitions for yardstick that I've seen before include "Ruler or tape, three feet long" , "General measure for comparison" , "Gauge" , "Three-foot rod as standard of comparison" , "Standard of measurement" .)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.