With the capability of measuring down to 1 milliamp (.001A), the #687 is a great tool for all low current applications. Especially for diagnosing parasitic drains! Clamp opening is large enough to fit over most negative battery cables. Applications: fuel injectors, fuel pumps, electric motors, battery drains, charging systems. Features- Two amp settings for AC and DC: 4A and 80A- 35 Test Ranges- 10 Test Functions- Auto Power Off- Auto-Ranging- Data Hold- Continuity Beep- Overload Protection- Clamp opening 5/8 inches- 9 Volt Battery Included- Carrying Case included Test Ranges:- Max Amps AC and DC: 80A- Max Volts AC and DC: 600V- Ohms: 0-400, 4k, 40k, 400k, 4M, 40M- Frequency: 0-5Hz, 50Hz, 500Hz, 5kHz, 50kHz, 500kHz, 5MHz, 10MHz- Capacitance: 0-40nF, 400nF, 4uF, 40uF, 100uF- Duty Cycle: 0-.5%-99.0%- Diode: Diode Test- Continuity: Audible Beep