CQ multiple point successive photoelectric surveying instrument is a kind surveying instrument composed of magnetic balls and CCD photographic devices. The inclination and azimuth can be read out through the surface monitor.
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周 策 肖圣泗 汤国起. CQ型光电多点连续测斜仪的研制[J].钻探工程,1999,(1):37-39.Zhou Ce, Xiao Shengsi, Tang Guoqi. The Development of CQ Multiple Point Successive Photoelectric Surveying Instrument[J]. Drilling Engineering, 1999,(1):37-39.