Study the sky the way sailors did. Duplicate the discoveries of yesteryear with our economical student device. This 7 x 6" astrolabe allows your class to make scientific measurements of declination, altitude, and azimuth of celestial bodies to determine latitudinal position or to observe the motion of the earth. You can also measure the slope, strike, and dip of the geologic features all around us. With instructions. Available singly or in class packs of 15.
