Indicating instrument with out-of-limit alarm and memory functions

The invention relates to an indicating instrument with out-of-limit alarm and memory functions, a measuring circuit can convert the measured quantity passing through the measuring circuit into the acceptable excessive quantity of a measuring mechanism, the surface of an indicating dial is provided with fan-shaped scales, and the center of the whole scale is rotatably provided with a pointer. The measuring mechanism is electrically connected with the indicating dial and the measuring circuit, the measuring mechanism can control the rotation angle of a pointer on the indicating dial according to the excessive quantity, the line-crossing alarm module is electrically connected with the indicating dial, the line-crossing alarm module can monitor the rotation angle of the pointer and send out an alarm signal, and the line-crossing alarm module is externally connected with an alarm device. The electronic clock is located on the indicating dial and electrically connected with the line-crossing alarm module, a memory