الصفحة الرئيسية > Term: Owen's borehole surveying instrument
Owen's borehole surveying instrument
A clockwork photographic apparatus that records clinometer and compass readings on sensitized paper. It is used during borehole surveying.
- قسم من أقسام الكلام: noun
- المجال / النطاق: التعدين
- الفئة: تعدين عام; Mineral mining
- Government Agency: USBM
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المنشئ
- ed.young
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(V.I.P) 21084 النقاط - 100% positive feedback
(Milwaukee, United States)
