I've some old Muirhead D-805 decade resistors, some without knobs. I'd like to put some knobs on them so I can change the resistance without using pliers.
Traditionally the knobs are large, chunky and probably bakelite or phenolic plastic, but I'm not too fussy about that. One
example is shown below.
The main problem is that the shafts are not the standard 1/4in (6.3mm) diameter, but are the larger 3/8in a.k.a. 0.375in (9.5mm) diameter.
Anybody know where I could get some at a pleasingly low price? No, I'm not prepared to pay £35 each!