I think I bought this gauge in 2005-2006 to use on an old Ford 8N tractor with a reconditioned 12v electrical system. PCB design and materials ESP8266/Arduino. Works great there too. I doubt it's calibrated to the level you need for things where it would be very expensive to screw up even a little, but for general DC voltage testing on pin headers and power supplies, checking for shorts after soldering/reworking one Having circuit board or checking AC power in your house wiring is great. The backlit screen is very useful, I don't think I'll ever buy a gauge without this feature.
Upgrade Your Car Diagnostics With 16 Pin OBD2 Extension Cable Splitter - Male To Dual Female Y Cable - 50CM
17 Review
Vgate ICar Pro Bluetooth 3.0 OBD2 Code Reader | Scan Tool For Torque Android To Check Engine Light & Car Faults
19 Review
eTORK 3/8-Inch Drive "Click Style" Electronic Torque Wrench: Precise Torque Control (25-250 In. lbs., 2-20 ft.-lb.)
12 Review
Autel AP200H OBD2 Scanner Dongle - Wireless Bluetooth Code Reader with Health Status Reports - Diagnostic Tool for Engine, Transmission, ABS, SRS - OLS/BMS Resets - All Vehicles (Android/iOS)
11 Review