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:

KnobHeight = 15
HoleDepth = 10
ScrewHoleDiameter = 2
Knurled = 1
RingWidth = 5
TaperPercentage = 30
CapType = 0
ShaftLength = 0
HoleFlatThickness = 1.5
ShaftDiameter = 0
Pointer2 = 0
Pointer1 = 0
RingMarkings = 15
KnobDiameter = 18
HoleDiameter = 6.4
NotchedShaft = 0
TimerKnob = 0