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:

ShaftLength = 0
ScrewHoleDiameter = 0
HoleFlatThickness = 2
HoleDepth = 12
TaperPercentage = 30
KnobHeight = 16
KnobDiameter = 17
RingMarkings = 0
Knurled = 1
TimerKnob = 0
Pointer2 = 0
Pointer1 = 0
NotchedShaft = 0
RingWidth = 2
CapType = 0
HoleDiameter = 7
ShaftDiameter = 10