Clamp meters (Ampe kìm) are portable electrical measuring instruments that can measure current non-contactly by simply clamping around wires. In manufacturing facilities, they enable safe measurement of load current, leakage current, and inrush current without circuit disconnection for equipment maintenance, electrical work, and distribution panel inspection. Equipped with AC/DC current measurement, voltage measurement, resistance measurement, and frequency measurement functions, they are essential for motor load monitoring, transformer inspection, and distribution panel diagnostics. Available in digital display, analog pointer, and data logger models according to application needs, ensuring high safety with CAT standard compliance. Unlike multimeters and insulation resistance testers, these are specialized devices with different measurement methods focused on non-contact current measurement.