Measure flag (8)
I believe the answer is:
standard
I believe this is a double definition.
'measure' is the first definition.
(I know that measure can be written as standard)
'flag' is the second definition.
(I know that standard is a type of flag)
(Other definitions for standard that I've seen before include "Flag - accepted level" , "Normal, average" , "Flag - of the usual kind" , "sort of lamp" , "Normal; flag" .)