I'm used to old school and they are in their place. But if you want to play it safe when checking your car's electrical system, I recommend getting one of these. I think the boost is low enough not to deal any significant damage. I have posted the measurements on my YouTube channel (JoeCanDoIt) if you are interested in knowing how to use the product.
TV bracket Kromax DIX-18 black
52 Review
β Stainless Steel L-Square, Size 3-Inch x 4-Inch, Zona 37-434
8 Review
Kapro - 353 Professional Ledge-It Try & Mitre Square - For Leveling And Measuring - Features Stainless Steel Blade, Retractable Ledge, And Etched Ruler Markings - 12 Inch
23 Review
π CAMWAY 6 Inch Digital Caliper with LCD Display, Electronic Vernier Caliper, 150mm Stainless Steel Feeler Gauge, Plastic Digital Caliper Set for Zero Setting Inside/Outside Diameter, Depth, and Step Measurement Tool
3 Review