Machine: Glodron

From Azuwiki

Glodrons are usually large glass bulbs affixed via some metal casing to walls or parts of a building or machine. While the exact inner workings of them are a closely guarded secret of the Machine Cult, they emit a white light with a tinge of blue. Their effect and distance is not unlike that of the Daylight spell, although they can be made to have less of an effect. They are extremely expensive, and are only officially utilized by the Prince and his government, though some Followers have managed to bribe the Mechnics into providing them with the same convenience.