The calibration circle https://prostroiku.info/stalnoj-krug-kalibrovannyj/ is used to repair devices of various purposes. This area of application became possible due to the flawless surface of calibrated circles A12 and high accuracy of their dimensions. In this case, there is no need to carry out additional mechanical processing of these parts. Cutting tools that are made from calibrated circles A12 have a long service life, which can be obtained due to the absence of mill scale on the surface of the material.
