Still gazing at the sky, Daichi's hand searched for the sextant near him and when his fingers touched the cold tool he brought it to his eye. He peered through it while searching for the horizon and when he found it he held down the clamp at the bottom of the device to release the index bar.

Next was to use the mirrors to bring the bright star to the horizon and released the clamp again. He swung the sextant left to right for verification and then read the angle.

63. It was that Hogwarts was unplottable or else he would have thought that either he had done something wrong or this device was broken... Either way, he lowered the sextant and began to scribble on his note book.