Can someone point me to a (relatively) inexpensive caliper to measure magnet wire?
Calipers are not accurate enough, even if they claim sufficient resolution. You need a micrometer that is capable of measuring to a ten thousandth of an inch.
Most large cities (in the US anyway) have a few stores that sell used micrometers, and something made 50 years ago by a name brand will work just fine if it wasn't abused too badly.
And there is always ebay.
And of course new Chinese-made mikes, some of which are perfectly serviceable. One buys these from industrial suppliers like MSC.
But expect to pay at least US $20, with $40 not unlikely for a good one.
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