My 260-8 has these DC ranges: 0-1-2.5-10-25-50-250-500-1000V
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I like the solution to the wrong termination resistance....in some ways I wish my HV probe was like yours, I own a Pomona Electronics Model 3157. This is a HV probe with build in meter. The probe designed for plug in operation presents a much lower load on the HV source, mine has a built in "sort of accurate" analog meter.
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Back when I played with 6502, 6914, 6914A and 7404 image converter tubes, I had to use a borrowed electrostatic voltmeter, talk about high impedance....
[Rare and pricy!]
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BTW Pomona makes extremely high quality test leads and oscilloscopes and even nicer "Pomona Blue Enamel 2397 Electronic Project Boxes"
