Vertical core sampler. 1 = cap; 2 = head; 3 = pin; 4 = handle; 5 = protuberance; 6 = pin hole; 7 = tube; 7-1 = furrow; 7-2 = thread; 8 = cutting point; 9 = compactor; 10 = jaws; 10-1 = notch; 11 = jack; 12 = base


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