KnowraGnomonLinked fromLinked fromThe 9 pages that link to Gnomon, each with the reason it gives.All 9Broader topic 3Related 6SundialBroader topic: Its angle and orientation determine how the shadow tracks the Sun.Astronomical instrumentBroader topic: The gnomon is among the earliest tools for measuring solar motion and time.Guo ShoujingBroader topic: Guo used a greatly enlarged gnomon to measure solar shadows and refine astronomical constants.