Pub used remote indicator (9)
I believe the answer is:
barometer
'indicator' is the definition.
(I've seen this before)
'pub used remote' is the wordplay.
'pub' becomes 'bar' (both are drinking establishments).
'used' indicates anagramming the letters.
'remote' with letters rearranged gives 'ometer'.
'bar'+'ometer'='BAROMETER'
(Other definitions for barometer that I've seen before include "Atmospheric pressure measurer" , "It checks state of sky" , "Weatherglass" , "One showing pressure" , "One measures pressure" .)