Swiss banker, briefly working, gets indicator of time (6)
I believe the answer is:
gnomon
'indicator of time' is the definition.
'gnomon' can be an answer for 'indicator' (gnomon is a kind of indicator). I am not sure about the 'of time' bit.
'swiss banker briefly working' is the wordplay.
'swiss banker' becomes 'gnome' (informal term for a banker, esp. one in Zurich).
'briefly' means to remove the last letter.
'working' becomes 'on' (on can mean working or activated).
'gnome' with its last letter taken away is 'gnom'.
'gnom'+'on'='GNOMON'
'gets' is the link.
Can you help me to learn more?
(Other definitions for gnomon that I've seen before include "Sundial shadow projector" , "Part of a sundial projecting a shadow" , "where time casts its shadow" , "Sundial arm" , "Sundial rod" .)