Why not rods?

 I'm no stranger to metric measurements. Science classes I took in the 1950s used metric values…the Army was just converting to metric in the 1960s, when I was there…we've all been talking about megabytes and gigabytes for a long time now.

Meanwhile, most Americans drive in miles and play football in yards.

It seems fair to assume that people who insist on using metric measurements exclusively have long since grown adept at making conversion when they need them.

In any event, if one insists on posting a sign like the one above, they ought to at the very least be accurate. Six feet equals 1.83 meters, not two. Or it's 0.36 rods.