Device for recording distance - to do mere maintenance? (8)
I believe the answer is:
odometer
'device' is the definition.
(odometer is a kind of device)
'recording distance to do mere maintenance?' is the wordplay.
'to do mere' anagrams to 'ODOMETER'.
However, I'm not clear how this is indicated.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for odometer that I've seen before include "Distance measuring device" , "It shows distance travelled" , "Device showing a vehicle's distance travelled" , "Travel measure" , "one showing our travel?" .)