Poti / Oscilloscope / Scope Knob

Yet another knob for turning axles. This one is replacing the four broken Scope Knobs of my Tektronix TDS 220. It has a 4.8 mm axis and my knob fit's as good as the original one. They got old and the plastic softener is not enough anymore to withstand the strength of my fingers :) Designed from Scratch with FreeCad. Using a trick to get the diameters correct although printing tolerances: 3 "fingers" build up the pressure to a Plate to hold the knob in place. Just some 30min work.