.458.350748.474.366710 || .490 .382699 Note. The use of the foregoing Table is given in Problem XVII. Rule 3 ¡ and the method of constructing it may be seen in Moss's Gauging, page 92. PART III. LAND-SURVEYING, AND MISCELLANEOUS QUESTIONS IN Superficial Mensuration. SECTION I. LAND-SURVEYING. LAND is commonly measured with a chain, invented by Mr. Gunter, and known by the name of Gunter's Chain. It is 4 poles, or 22 yards in length, and divided into 100 equal parts, called links; each link being 7.92 inches. An acre of land is equal to 10 square chains; that is, 10 chains in length and 1 in breadth; or 220 × 22 = 4840 square yards; or 40 x 4 = 160 square rods, poles, or perches; or 1000 x 100 = 100000 square links. The measurement of land is generally given in acres, roods, and perches: 4 roods being an acre, and 40 perches a rood. A statute-pole or perch is 163 feet long; but in different parts of the kingdom there are, by custom, poles of different lengths; as 15, 18, 21 feet, &c. |