The meter he chose was a Fluke 15B+, the company’s budget offering ... but he did find an I2C EEPROM which he correctly guessed held calibration settings. Removing this chip gave him a meter ...

In the process of tearing down a Fluke 77 meter for another reason entirely ... Annoyingly, there doesn’t appear to be any way to just calibrate the AC measurements, for example.

“With demand for calibration growing every year, Fluke 5560A [right] defines a new class of multi ... which can calibrate 4.5 digit DMMs All can deliver 30 A continuously for calibrating clamp meters ...