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DQL-8 ALUMINUM POCKET TRANSIT GEOLOGICAL COMPASS SURVEYING AND LEVEL Metal construction Measure direction,obliquity,gradient,upright,horizontal Worldwide use Professional compass DQL-8 Pocket compass: Made of metal construction Compass with liquid-filled To measure direction,obliquity,gradient,upright,horizontal Used in geology perambulation,colliery and other mine exploitation,military training specification: Size:80×70×35(mm) Net- Weight: 0.24kg Graduation Circle: 0°~360° Damping time of needle:30-60s Dial scale: 1° The reading error: ≤ 0.5S Precision of long air level: 15′±5′/2mm Precision of circle air level: 30′±5′/2mm Material: Aluminium alloy crust
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