Manual calibration device for calibration instrument

The utility model discloses a manual calibration device for a calibration instrument. The calibration device comprises a gear sleeved on a calibration cap of the calibration instrument, gear engagement connection transmission chain, two ends of the transmission chain penetrate out of the scale instruments; the device also comprises two transparent calibration rods. Each calibration rod is providedwith a scale line, the two ends of the transmission chain penetrate through the calibration rods respectively, due to the fact that the gear is fixed to the calibration cap, calibration of the instrument is achieved through movement of the transmission chain meshed with the gear, the instrument calibration device is simple in structure, potential safety hazards are greatly reduced, and working efficiency is effectively improved. 本实用新型公开了一种手动刻度仪表标校装置，包括套接于刻度仪表标校帽上的齿轮，齿轮啮合连接传动链条，传动链条两端均穿出刻度仪表，还包括两个透明的标校杆，每个标校杆上均设有刻度线，传动链条两端均穿过有一个标校杆，由于齿轮固定于调校帽上，通过与齿轮啮合的传动链条移动实现对仪表的校对，本实用新型的装置结构简单，大大的降低了安全隐患，有效的提高工作效率。