This one is the result of interaction with the techs and mechanics at shows and over the phone. Guys have been wiring up fuse holders in their test leads forever. Why? It saves your Multimeter fuse from blowing. You'd rather blow an ATO fuse than the little DMM fuse. These guys always complain about what a pain in the neck it is to find the source of the little DMM fuse inside their meter. This will prevent that scenario and save them time and time is money in our business.