The last in the present series of machines, though there will be more designs produced in the future. Again, a classic English style machine, which will grace any style of instrument. They are named after my dear friend, "Herbert Rainer Knobel" of Celle in Germany. "Knobel" is to my way of thinking a great maker and repairer of basses, and what is more a very fine human being who all can trust to be honest and forthright. He is married to Christina, a Dutch lady and a true friend. I was really happy to name these machines after this fine fellow. The machine comes with a screw and washer which must be used to hold the cog in place. The cog is very low geared which gives very fine tuning. Very easy to fit.