High quality knob from vintage military test gear. The middle part seem to be of brass and the outer shell might be Bakelite. These are designed for 6mm shaft.
lower part is 21mm in diameters and the top parts is 36mm in diameters and the knob is about 43mm long.
most have scratches and scuff on them. PLEASE NOTE I HAVE MANY OF THESE. ONE WILL BE SELECTED AT RANDOM. SOME HAVE FLATHEAD TIGHTENING SCREW AND SOME HAVE HEX
