Originally Posted by
reppans
... Curious how barend mirror work on the Brompton M-bar when folded given that the left barend is near dragging on ground?...
Incidentally sorry for not answering... the CatEye mirrors I use have quite a large range of adjustability including being able to swivel the mirror a full 360° and just enough so that the back side would come in contact with the ground if anything.
In this pic I swiveled the mirror to the underside whereas I usually have it topside while riding... an advantage of the ball and 'socket' design.