Hameg mainframe HM8001 system, plugin module HM8030-4 Function Generator is really a good stable and a very usefull unit. The unit shown is from 1992,
Specification : 0.3Hz to 3MHz, upto 100kHz it should deliver THD under 0.5%
the potentiometer shafts 3D design is free available via my thingiverse
https://www.thingiverse.com/thing:6896153
my video about the Hameg mainframe is here
https://youtu.be/LJzvbD8rSO0
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#repair
#test
#teardown
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I use auto generated subs, i am sorry there are a few spelling errors,
maybe one day they can do it better..
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(Thanks to all my Sponsors / Traders / Swappers / Sellers / Buyers, without your support and constant flow of cool items in/out, none of this would be possible)