PRESENTATION OUTLINE
WHAT DO YOU THINK AN ASTROLABE IS?
ASTRONOMY, GEOGRAPHY, TIMEKEEPING
FROM THE POSITIONS OF THE SUN AND STARS THEY COULD TELL TIME
INCLINE AND DECLINE OF HORIZON
USED TRIGONOMETRIC RATIOS
GRADIENT, HEIGHT OF HORIZONS
HARBINGERS USED ASTROLABES
HEBREW ASTROLABE ORIGINATED IN SPAIN
APPEARANCE OF AN EXQUISITE POCKET WATCH
WHEN OUR PHONES DIE OUR ONE DAY,