Just did my front brake the other day. Used the ole eyeball method.
Current; 1997 2Wd Ural w/an 08 Engine, Drivetrain and Electronics not many mods, I just ride the thing! 1998 Buell S1W, 1998 H-D 883, 2004 Buell XB12R (Race bike)
Pevious; 1990 H-D Springer, 2001 H-D 883, 2006 Buell Ulysses, 2008 H-D FLHP Road King (work), 2010 H-D FLHP Road King (work) x3, 2012 FLHP Road King (work) X2