How to Calibrate Inexpensive Multimeters - YouTube
Digital Multimeter Calibration
Multimeter Calibration Services | Tektronix
Fluke 177 RMS Digital Multimeter with Backlight, 50 Megaohm Resistance, 1000V AC/DC Voltage, 10A AC/DC Current with a NIST-Traceable Calibration Certificate with Data: Amazon.com: Tools & Home Improvement
How to Calibrate a Digital Multimeter | Hunker
How to Calibrate Fluke 87 Digital Multimeter Using Fluke 5522A Calibrator