Most of the top manufacturers keys are nearly identical in width, however, the spacing between keys varies from 1 to 1.5-mm, which will ultimately have an impact on the octave width. The PSR-3000's octave width is 160-mm while the average key width is 22.5-mm.

Gary

------------------
Travlin' Easy
_________________________
PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)