制作方法和规格用0.5毫米厚的镀锌铁皮250×115毫米一块焊成圆筒并焊上筒底。上盖用两块半圆形铁皮制成,一块为筒口圆周外径1/3大小,与筒口焊接固定,另一块为筒口外径圆周2/3大小,与上述固定板以折页联接形成活动盖板。上盖和筒底内侧相对应点各焊一小勾,挂上橡皮筋或弹簧,利用拉力保证活动盖密封。在活动盖面中央焊一小环,系上绳带可控制盖的开启。另用10毫米宽的铁皮在筒的外壁上下各焊一孔径为30×15毫米的耳绊作固定标杆用。采样器即已制成。规格及形状见附图。使用方法与特点取一根标有刻度、长约1.6米的木、竹或金属类长杆,下端钻一小孔,将下端插入两 Production methods and specifications 0.5 mm thick galvanized sheet metal 250 × 115 mm welded into a cylinder and welded to the bottom. The upper cover is made of two semi-circular iron sheets, one is 1/3 the outer diameter of the circumference of the mouth and is welded and fixed with the mouth of the mouth, and the other is 2/3 of the diameter of the circumference of the mouth of the mouth, Cover. Cover the bottom of the tube and the corresponding point of the welding of a small hook, hanging rubber band or spring, the use of tension to ensure that activities cover seal. Central activities in the welding surface of a small ring, the Department of rope control lid can be opened. Another 10 mm wide metal tube in the outer wall of the upper and lower welding a hole diameter of 30 × 15 mm ears trip fixed rod used. The sampler is made. Specifications and shape see photo. Use and characteristics Take a marked scale, about 1.6 meters in length of wood, bamboo or metal pole, drill a small hole at the bottom, insert the lower end of the two