Issuing organization: General Administration of Quality Supervision, Inspection and Quarantine
Release time: 1990
Specification category: mandatory standards
Whether to abolish: No
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Main contents and scope of application This standard specifies the use of a photoelectric range finder with a nominal accuracy of not less than ± (m (m + 1) and a measurement range of not less than 1 k 5 ppm D, p) for the first and second countries of the country. Methods and technical requirements for measuring side lengths in control networks and inspection items of instruments. This standard applies to the measurement of first- and second-class locks (edges and starting edges and first-and-second network) in national geodetic control networks. The side length measurement with other corresponding accuracy can be adopted by reference. 2 The reference standard "National Triangulation and Precision Traverse Measurement Specifications" was established by the General Administration of Surveying and Mapping, 1996, 17. 3 Inspection of the instrument 31 Inspection of the rangefinder. After the purchased rangefinder has performed the following inspections, it is necessary to perform the inspections specified in Article 312. a Visual inspection, .b Check whether the accessories and accessories of the instrument are complete, and c. Check the optical parts of the instrument. Whether it is clean and undamaged; d The connection mechanism of the instrument should be stable and reliable; The braking mechanism should be flexible and effective; e Check whether the operation keys and knobs of the instrument are flexible, and whether the digital display is clear; t According to the use steps of the instrument manual, ‧ Power on to check the function of the instrument, g Follow the appendix (A supplement). The method shall be used to inspect the dispersion of distance observations. 312 The rangefinder that has been used in production or repaired shall be inspected according to the following specified items.