1. Leather is usually measured in two ways: area and weight: \x0d\ square feet commonly used in China, and square port feet commonly used in Hongkong and Taiwan Province. Where: 1 square foot = 30 cm *30 cm, 1 square foot = 25 cm *25 cm \x0d\ Japan and other countries usually take DM as the leather unit,1DM =10cm *10cm; \x0d\ European and American countries usually take the weight (ounce) as the tare weight unit, and determine the price per ounce according to the thickness and leather; In China, some scraps are often sold by weight (kg). \x0d\2。 The leather area is measured by the factory leather measuring machine, and all edges and corners are taken into account when measuring. Generally, the leather measuring machine is controlled by a computer, and the leather area is calculated through a set program. It is not the longest side * widest side of leather that can calculate the area, and because of the irregular shape of leather, a square foot of leather will not be exactly as big as 30 cm *30 cm, and it is difficult for us to count the corners with naked eyes or with a ruler, so usually the leather we see will be smaller than the calculated theoretical area value. \x0d\3。 The whole adult cowhide is about 250 cm long, 200 cm at its widest point and 50-54 square feet in area. The average length of the whole pigskin is about 1 10 cm, the widest part is about 90 cm, and the area is about 10- 13 square feet. The length of the whole sheepskin is about 80 cm, the widest part is about 60 cm and the area is about 4-6 square feet. This is just an average. In fact, the size of each skin varies greatly.