Clamp opening is large enough to fit over most negative battery cables.
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 Especially for diagnosing parasitic drains! Electronic Specialities 687 Low Current Probe Digital Multimeter With the capability of measuring down to 1 milliamp (.001A) the #687 is a great tool for all low current applications.. Applications: fuel injectors fuel pumps electric motors battery drains charging systems.