Telescopic anti-backlighting cover for level gauge

The utility model belongs to the technical field of leveling assistance, and solves the problems that the conventional anti-backlighting cover cannot stretch and is easy to fall off and wear an objective lens. The telescopic anti-backlighting cover for the level gauge comprises an inner cover body fixedly arranged at the front end of a level gauge main body in a sleeving mode, the inner cover body extends forwards in the axial direction of the level gauge main body, the front half portion of the inner cover body is located in front of an objective lens, an outer cover body is attached to the front half portion of the inner cover body in a sliding mode, and the outer cover body slides in the axial direction of the level gauge main body. And the front end of the outer cover body is always positioned in front of the inner cover body. The leveling device is simple and compact in structure, and the purpose of leveling in backlighting in different light environments is achieved through the telescopic cover body. 本实