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
RingWidth = 0
TaperPercentage = 50
KnobHeight = 10
HoleDepth = 10
ScrewHoleDiameter = 3
CapType = 2
HoleFlatThickness = 0
ShaftDiameter = 10
RingMarkings = 10
TimerKnob = 1
ShaftLength = 0
HoleDiameter = 6
KnobDiameter = 20
Knurled = 1
Pointer2 = 0
Pointer1 = 0