Both for the desktop power supply and for other test equipment. I wouldn't mind if a few more colors were available, but to be honest it doesn't do much good using more than 4 colors at a time anyway. It's nice to be able to connect regular multimeter pins to it and switch between them without unplugging and plugging them back in. (Maybe it's not such a good idea to connect that many wires for certain types of measurements, but I don't usually need to be very precise.)
π² Johnson RAS-1B Johnny Square: Professional Aluminum Rafter Square, 7'', Silver - Top Quality with 1 Square
8 Review
π Johnson Level and Tool 400EM-S 12-Inch Heavy Duty Metal Combination Square for Professionals, with Inch/Metric Measurements, Silver - 1 Square
8 Review
π Crescent EX6 2-in-1 Extendable Layout Tool - LSSP6: The Ultimate Precision Measuring Companion
3 Review
Swanson Tool S0101 7 Inch Square
7 Review