120rod是多少m？
120rod = 603.504m
是603.504m，所以說成604m也沒問題——四捨五入的誤差在0.5%以內。
反過來，120m是多少rod？
120m = 23.8607rod
計算公式: m = rod × 5.0292
該數值前後的 rod → m
30 rod150.876m
40 rod201.168m
50 rod251.46m
60 rod301.752m
70 rod352.044m
80 rod402.336m
90 rod452.628m
100 rod502.92m
110 rod553.212m
120 rod603.504m
130 rod653.796m
140 rod704.088m
150 rod754.38m
160 rod804.672m
170 rod854.964m
180 rod905.256m
190 rod955.548m
200 rod1,005.84m
210 rod1,056.132m
220 rod1,106.424m