[Varley]

I had a modern Fluke insulation resistance meter but it was so little used its battery was flat enough that it's Eprom forgot what model it was so I dumped it in favour of a windie-windie one which started me off in that direction.

Simpson - another excellent meter.

I do have a nondescript high impedance digital multimeter but need that feature even more rarely. I always preach that one's arsenal should always include a moving coil meter, not only because one can catch a twitch from the corner of one's eye but because it will have a lower impedance less likely to lead one astray when looking for voltages in basically low impedance plant. I note Fluke have a meter with a voltage range with low impedance.

(I was forgetting the three wooden cased reflection galvanometers and the Wheatstone bridge and proper CRT 'scope).