Craig in Texas

My Fikse Mach V's were stolen off my patio and I'm trying to order an exact replacement. Problem is I bought them from an individual in Chicago and no longer have the contact info on that person to ask about the exact sizing she specified. I want them to clear Big Reds in case I get them later and the stolen ones were off a narrow 993 with the Big Reds. Fikse asked me for the measurement from the surface of the brake disc to the outside surface of the Big Red calipers. Does anyone know that measurement or could check it on their own car? Thanks a bunch.