The use of a mathematical instrument, called a quadrant : shewing very plainly and easily to know the exact height or distance of any steeple, tree, or house, &c. : Also to know the hour of the day by it; the height of the sun, moon, and stars; and to know the time of sun-rising and setting; and the length of every day in the year; the place of the sun in the eliptick; the azimuth, right ascention, and declination of the sun : with many other necessary and delightful conclusions, performed very readily : as also the use of a nocturnal, whereby you may learn to the know the stars in heaven, and the hour of the night, by them with many other delightfil operations.