单词 | compass declinometer |
释义 | compass declinometer [`käm·pǝs ´dek·lǝ`näm·ǝd·ǝr] ENGINEERING An instrument used for magnetic distribution surveys; employs a thin compass needle 6 inches (15 centimeters) long, supported on a sapphire bearing and steel pivot of high quality; peep sights serve for aligning the compass box on an azimuth mark. |
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