Crossword Genius

It measures distances by the foot (9)

Ross

I believe the answer is:

pedometer

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This clue could be a double definition.

'it measures distances' is the first definition.
The definition suggests a singular noun which matches the answer.

'foot' is the second definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'by the' acts as a link.

Can you help me to learn more?

(Other definitions for pedometer that I've seen before include "Tom peered (anag.)" , "Counter of paces" , "It shows distance walked" , "Check on walker" , "It records steps taken" .)

I've seen this clue in The Globe and Mail.
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