+ heading_indicator_fg.cxx heading_indicator_fg.hxx \
+ kr_87.hxx kr_87.cxx \
+ kt_70.cxx kt_70.hxx \
+ mag_compass.cxx mag_compass.hxx \
+ marker_beacon.cxx marker_beacon.hxx \
+ navradio.cxx navradio.hxx \
+ slip_skid_ball.cxx slip_skid_ball.hxx \
+ transponder.cxx transponder.hxx \
+ turn_indicator.cxx turn_indicator.hxx \