Yeah,not only were they better insulated than DMMs,they were so heavy,you had to place them on the floor or a chair,or something like that to use them--none of this handheld nonsense,men were men in those days!
That,plus the big scale meant you could stand back about 2 ft,& still use them.
The AVO 8 had a 2kV scale,which worked,too!
About "heavy"--way back when,I was working up in Wyndham WA,wearing the standard local attire of
T-shirt,"footy"shorts, & "thongs"(Just so we don't freak out the Brits & North Americans,"thongs" are the separate toe sandals called "flip-flops" outside Australia).
The AVO 8 was sitting on the top of a transmitter,when,in a deft(or,daft) move,I dragged it off its perch with the testleads.

I put my foot out to save the AVO from damage on the concrete floor.
Not a good idea!!No damage to the meter,but I limped for a couple of days.

VK6ZGO