Norma Nilotica

The Nilometer

Unofficial Abbreviation: Nil
Genitive: Normae Niloticae
Origin: Alexander Jamieson

The extinct constellation of Norma Nilotica

Urania's Mirror was a set of astronomical star charts printed on individual cards and based on Alexander Jamieson's Celestial Atlas Comprising A Systematic Display Of The Heavens In A Series Of Thirty Maps. Card #26 showed Aquarius holding a nilometer in his hand. A nilometer is a device for measuring the depth and clarity of the River Nile.