Selina grinned when she recieved three points for her answer. In all honesty she guessed that the sun dial was in fact a sun dial. Now as for it being an armory sun dial or whatever it was, that she did not know. After all she was not super human and knew the answer to every question Professors asked. But when Roslund asked if they were still important in today's world, Selina rose her hand and said, "I would gander that they are, sir. Why else would we learn about them?"