The working principle is different: hand jacking iron is a hand tool, which is operated by manpower and requires certain strength and skill when used. Meson machine is an electronic device which uses electronic technology and computer control technology to accurately measure, locate and process.

Different uses: Hand-cranked iron is mainly used to knock, pry up, support and correct metal parts, and is suitable for some simple body repair and plastic work. Meson machine is suitable for repairing and forming complex metal parts, and can be used for cutting, grinding, sucking and supporting.