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:

NotchedShaft = 0
KnobHeight = 20
ShaftDiameter = 8
RingMarkings = 10
RingWidth = 0
HoleFlatThickness = 0
Pointer2 = 1
Pointer1 = 1
ShaftLength = 10
HoleDepth = 10
HoleDiameter = 6
CapType = 0
KnobDiameter = 20
TaperPercentage = 20
ScrewHoleDiameter = 0
TimerKnob = 0
Knurled = 1