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 = 3
ShaftLength = 0
ShaftDiameter = 10
TimerKnob = 0
Knurled = 0
TaperPercentage = 30
HoleDepth = 12
KnobDiameter = 12
HoleFlatThickness = 0
RingWidth = 1
NotchedShaft = 0
Pointer2 = 1
Pointer1 = 1
RingMarkings = 0
KnobHeight = 18
CapType = 2
HoleDiameter = 5