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Affordable benchtop DMM with largest digit size for senior user?
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LinuxHata:
He does not likes handheld DMMs because they have auto off feature and backlight never stays constantly on. He has PeakMeter PM18C, so he modded it to have backlight to be constantly on, but multimeter still keeps turning itself off. You can disable that feature, but it will beep each 5 minutes then :D

I checked ebay, Keithley 179 seems to be quite nice thing. But it has red digits, and he hates red color. Considering these are LED, I guess, modern drop-ins, with green or white color, will be available around. But what about other mechanical parts? like push-buttons, are they durable or easy to find and replace?

I have another idea. Since I own some amount of IN-12, IN-14, IN-18 nixie tubes (the latest being the largest), technically, if there's a multimeter, which outputs raw digit data, even over serial (but not USB, have not enough programming skills at my side), I can make really huge "display" for it, using these nixie tubes :)
Swainster:
I've got a number of multimeters (unfortunate case of TEA), but I keep a UNI-T 802 almost permanently turned on on my bench. It's manual ranging but that doesn't bother me (however the switch has a lot of positions so not sure how well you'd be able to operate it by "muscle memory". The fact that it's a low cost LCD meter means I can leave it turned on without worrying about "burning" the display or wasting too much energy. Its accuracy is plenty good enough for most purposes (for instance, it has the same low current resolution as my Keithley 2000 or Agilent 34401As)
AVGresponding:
How about one of these?

Fungus:
Maybe one of these:

https://www.aliexpress.com/item/1005002534314510.html



Apart from very big digits it also has a button on the probe that you can press and it speaks the reading.
LinuxHata:
This is not serious and it has no rotary selector.
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