AFIK, the Eclipse business jet has its PFD speed tape calibrated to read KEAS
Most of the SR-71 airspeed limits are expressed in KEAS.
Minimum airspeed 310KEAS when supersonic, 300KEAS when subsonic above FL250, 145KIAS below FL250 unless angle of attack limit would be exceeded
Design Mach 3.2, Maximum scheduled cruise Mach 3.17, Mach 3.3 may be flown if approved by Commander if compressor inlet temperature 427°C is not exceeded
Maximum airspeed for normal operation 450KEAS, design limit speed 500KEAS