500rod是多少m？
500rod = 2,514.6m
是2,514.6m，所以说成2,515m也没问题——四舍五入的误差在0.5%以内。
反过来，500m是多少rod？
500m = 99.4194rod
计算公式: m = rod × 5.0292
该数值前后的 rod → m
50 rod251.46m
100 rod502.92m
150 rod754.38m
200 rod1,005.84m
250 rod1,257.3m
300 rod1,508.76m
350 rod1,760.22m
400 rod2,011.68m
450 rod2,263.14m
500 rod2,514.6m
550 rod2,766.06m
600 rod3,017.52m
650 rod3,268.98m
700 rod3,520.44m
750 rod3,771.9m
800 rod4,023.36m
850 rod4,274.82m
900 rod4,526.28m
950 rod4,777.74m
1,000 rod5,029.2m