Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Devices of noncontact control of internal surfaces roughness in industrial conditions Mironchenko V.I. The description of portable devices for the noncontact control of internal surfaces roughness “Dozor-V” and Dozor-VK” which operation is based on a variant of a photometric method, is listed. The results of tests for cylindrical surfaces of 30- 100 mm diameters of various materials and processing types are presented. Devices replace the visual control over the roughness samples and are recommended for usage directly in industrial conditions.