Measure credit extended to Met office? (9)
I believe the answer is:
yardstick
'measure' is the definition.
(I know that yardstick is a type of measure)
'credit extended to met office?' is the wordplay.
I cannot quite understand how this works, but
'credit' could be 'tick' (on tick can mean purchased on credit) and 'tick' is found in the answer.
'met' could be 'yard' (Scotland Yard, Metropolitan Police HQ) and 'yard' is found in the answer.
A single letter 's' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for yardstick that I've seen before include "Three-foot rod as standard of comparison" , "Gauge" , "Standard of measurement" , "Criterion - means of measuring" , "Guideline" .)