Measuring device for lock repair

The utility model relates to a measuring device for lock repair. The measuring device includes a guide rod (10) and a thin steel sheet (11); the thin steel sheet (11) is inserted into the guide rod (10); a process groove (13) is formed in the guide rod (10); a sliding channel (14) on which the thin steel sheet can slide forwards and backwards is arranged in the guide rod (10); the tail end of the sliding channel (14) is connected with a guide opening (15) used for changing the movement direction of the thin steel sheet (11); and the guide rod (10) can rotate leftwards and backwards and moves forwards and backwards in a cover plate body (2), so that the thin steel sheet (11) on the guide rod (10) can swing leftwards and rightwards, the head of the thin steel sheet (11) extending out, and therefore, in the aspect of usage, the thin steel sheet (11) can be replaced with easiness with a handle and a guide block after being fractured or damaged. The measuring device is very practical and convenient.