Calibration structure convenient to operate

The utility model discloses a calibration structure convenient to operate, which comprises a rack, a measurement reference plate is rotatably connected below the rack, a contact block is fixed at one end, far away from the rack, of the measurement reference plate, and an accommodating groove for accommodating the measurement reference plate is formed in the rack; and the limiting assembly is arranged at a position between the measurement reference plate and the rack and is used for limiting and fixing the measurement reference plate after the measurement reference plate is stored in the storage groove. According to the calibration structure convenient to operate provided by the utility model, the measurement reference plate can be overturned and folded through the rotational connection of the measurement reference plate and the rack, and the measurement reference plate can be folded in the rack through the storage groove formed in the rack, so that the space occupation of the device when the device is idle is