Abstract: A mechanical device in the form of a circular slide rule of which a circular portion and two arms rotate around a common axis on a fixed rectangular base plate. Said circular portion displays information through six horizontal apertures which is revealed from the rectangular base plate. Two arms rotating from the common axis atop the circular portion contain three apertures through which information is displayed from the circular portion. The device has an adjustable input in the form of precise birth data, and an output portion revealing a plurality of factors in gemstones, Biblical data, historical and symbolic data directly related to, and associated with, time of birth factors.