Knob {
   eventIn      SFFloat    set_fraction
   eventOut     SFFloat    fraction_changed
   field        SFFloat    fraction 0
   field        SFBool     noloop FALSE
   eventOut     SFTime     touchTime
   exposedField SFBool     enabled TRUE
   exposedField MFNode     knob [
   		Shape {
   		appearance Appearance {
   			material Material {
   				diffuseColor 0 0 1
   				}
   			}
   		geometry IndexedFaceSet {
   			ccw FALSE
   			coord Coordinate { point [
   				.01 .01 0,
   				0 .01 -.05,
   				-.01 .01 0,
   				.01 -.01 0,
   				0 -.01 -.05,
   				-.01 -.01 0,
   				]}
   			coordIndex [ 2, 1, 0, -1,
   				3, 4, 5, -1,
   				0, 1, 4, 3, -1,
   				5, 4, 1, 2, -1,
   				]
   			}
   		}
   		Transform {
   			translation 0 .0175 0
   		children Shape {
   			appearance Appearance {
   				material Material {
   					diffuseColor 0 0 1
   					}
   				}
   			geometry Cone {
   				bottomRadius .03
   				height .015
   				}
   			}
   		}
   		Shape {
   		appearance Appearance {
   			material Material {
   				diffuseColor 0 0 1
   				}
   			}
   		geometry Cylinder {
   			radius .03
   			height .02
   			}
   		}
   	]
}