I do not know. So I think you should use Answer.com instead.
He used a portable sundial.
He didn't. The sundial, or gnomon has been used since antiquity.
In Ancient Times
The sundial
A sundial
A sundial
Well, for starters you just used sundial in a sentence. But another sentence could be... Sundials help you tell time.
The pin of a sundial where the shadow falls is called the gnomon. It is typically a thin, straight rod that extends vertically from the sundial's base. The shadow cast by the gnomon is used to indicate the time of day on the sundial's face.
* theodolite * protractor * sundial * the hand
sundial
i dont have a clue lol
I have a sundial in the garden.The sundial were the earliest form of clocks.