Maksim Tank's poem The Sun-Clock describes his sun clock as "remarkably accurate". However, he further states that
When someone asks me
"What o'clock is it?"
I stop,
Like my grandfather and father,
I pace out my shadow and tell
The time, accurate to the minute.
I'm somewhat confused as to what he's referring to here. That doesn't seem like a normal (or especially accurate) procedure. Can someone clarify?