NOL ring calibrating device

According to the utility model relates to a NOL ring calibrating device includes the support unit, has the loading unit of sensing parts and is out of shape the record unit. The loading unit sets up on the support unit, is out of shape the setting of record unit on the positive opposite of support unit, including the image acquisition parts. The utility model relates to a NOL ring calibrating device carries out the load through loading unit counter stress ring, and the magnitude of load passes through the sensing parts and shows, stops the load when treating load to calibrating spot, treats to write down sensing parts reading after the indicating value steadily, passes through image acquisition parts record signature position simultaneously, obtains NOL ring deformation size through calculating the position change, obtains the relation between loading force and the deformation through the data that record at last. The utility model provides a NOL ring calibrating device can realize counter stress ring power v