Mysteriously prowled with cane for unit of photometry (6-5)

I believe the answer is:

candle-power

I'm a little stuck... Click here to teach me more about this clue!

'unit of photometry' is the definition.
I know nothing about this answer so I can't tell whether this works.

'mysteriously prowled with cane' is the wordplay.
'mysteriously' indicates anagramming the letters.
'with' means one lot of letters go next to another.
'prowled' after 'cane' is 'caneprowled'.
'caneprowled' anagrammed gives 'CANDLE-POWER'.

'for' is the link.

Can you help me to learn more?

(Another definition for candle-power that I've seen is " Measurement of light".)

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

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.