Horizontal test tube soil sampler parts: 1-1 = base; 1-2 = hole; 1-3 = bay; 1-4 = upright shaft; 1-5 = pin; 2-1 = furrow; 2-2 = hole; 2-3 = hand-push piston; 2-4 = pin; 2-5 = piston head; 3 = folding ruler; 3-1 = pin; 3-2 = hole; 3-3 = rivet; 3-4 = hole.