260 external on that staircase, droop snoop finish with mid charge point on the first bend as it will park the chair on the widest part of the stairs, due to the width of the stairs you may need an offset foot rest
260 is named after its minimum diameter of bend it will travel round, you may get away with an internal if the bend is made tighter due to to being on the incline, but it will still incur loss of space on the quarter landings and limit your parking options
personally i would favour the external rail
bruno’s are what we call FAB lifts! made for the larger person! iirc their curve doesnt have an osg/safety gear mech!
