[quote name='cheddatom' post='301183' date='Oct 7 2008, 12:15 PM']Thanks. I might measure mine tonight to see if mine's tight or wide. I always thought it was wide, but 17mm seems like a big gap to me![/quote]
As Eude says, its measured centre to centre. I asked Jon for 17mm to be the tightest spacing at the C and G string and for the remainder of the strings to be adjusted for gauge as they get thicker. Its one of the other advantages of having a bass with mono rail bridge units. Alembics have string spacing of 16.5mm and thats pretty narrow, something like a Yammie TRB has spacing around 18 or 19mm IIRC.