Okay, I've never used a panel voltmeter as a hobby so wasn't sure what I was getting. These blocks are 100% plastic and I have to assemble them in a non-standard way as I don't have a control panel. Other than that, they do exactly what they're supposed to do and the mounting hardware is every bit as good as what I've worked with at work. The plastic seems strong enough to withstand the assembly process and it looks like they'll last (mechanically) for a few years at least. I'm not sure how accurate they are, but for a device that only measures a tenth of a volt between 0 and 5 volts, I didn't find them grossly mismatched with my (cheap) DVM.
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