Clear display screen. Has a .01 Amp resolution. Its designed specifically for circuit testing. Measures from 0 to 20 Amps Circuit testing made EASY! This tester connects directly into the fuse socket, measuring from 0 to 20 Amps. No more clumsy connections, Fuse Buddy fits tight and stays put. The removed fuse is plugged into the tester, maintaining circuit protection. Its designed specifically for circuit testing, plugs right into fuse socket. Great for diagnostic troubleshooting and parasitic drains.