3-digit, 7-segment display (one unit) questions/help..

Im curious if anyone can answer this:

when they are describing the 'size' of the 7-segments displays.. (like in the ebay links above)..

the .56in are they referring to the actual NUMERIC height?.. or the overall height of the 'display/unit' itself?

the unit I have in hand.. measure .75in for the display in height.. but when I just measured the numeric portion.. it seems to be 0.56in?

(so I guess those 0.56in ones ARE the ones I need to order? i cant seem to find them at Digikey or Mouser though? tayada seems to only have 0.28in ones??)