FT-101ZD VFO Knob

I was looking for a potentiometer knob similar to the one used by the FT-101ZD. I was not able to find one so this is my interpretation. The back of the knob is hollow and, to add weight, I embedded some small solid lead cylinders. The knob is secured with an M3 nut and bolt.

Dimensions are 50mm diameter by 24mm high.