Customized version of http://www.thingiverse.com/thing:54024

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=54024

Using the following options:

ScrewHoleDiameter = 0
Knurled = 0
Pointer2 = 0
Pointer1 = 0
CapType = 2
TimerKnob = 0
ShaftDiameter = 0
TaperPercentage = 0
KnobDiameter = 25
NotchedShaft = 0
HoleDepth = 30
HoleFlatThickness = .8
KnobHeight = 35
ShaftLength = 0
RingWidth = 0
RingMarkings = 10
HoleDiameter = 6