Numpty question - does the 777 have an AOA gauge and if so, what does it present to the pilot?
AOA has marks every 5 units.
Stall margin indicator(stall)
Green arc for 'on speed'. Only visible, and accurate, with landing flaps(777 - 25/30, 737-15/30/40). So on the 737 it appears at flaps 15(landing flap setting), disappears for flaps 20/25(not AA approved landing flap setting), and reappears for flaps 30 and flaps 40.
Green arc is at the 5 unit location with landing flaps selected(3 o'clock position) (+/-). Approx. 4-6 units is the upper and lower limits of the green arc.
Upper right corner of PFD. Supposedly where BA has their radar altimeter readout.
Upper right corner of 737 HUD.
About the size of a 1 EU coin or slightly smaller than a U.S. quarter.