The utility model relates to the technical field of measuring instruments, in particular to a portable
laser level gauge which comprises a triangular support, a horizontal adjusting device is arranged on the top of the triangular support, a positioning connecting
assembly is arranged on the top of the horizontal adjusting device, and a level gauge body is connected to the top of the positioning connecting
assembly in a sliding mode. The portable
laser level gauge comprises a level gauge main body, a protection adjusting
assembly is arranged at the bottom end of the interior of the level gauge main body, a rotating shaft in the protection adjusting assembly is rotationally connected to the interior of the level gauge main body, a gear b is arranged at the
tail end of the rotating shaft, and a
light spot adjusting knob is rotationally connected to the exterior of the level gauge main body. By rotating the locking knobs, switching of the primary locking mode and the
large aperture mode can be synchronously completed,
laser eye injury is avoided, the
operation safety is improved, double stable connection is achieved through multi-assembly linkage and thread locking, only two knobs need to be operated for disassembly and assembly, no extra tool is needed, and the portability and the use efficiency are greatly improved.