Patent ID: 6886740

Claim:
An apparatus comprising a base, the base comprising a circular display of first markings divided into 153 equiangular parts disposed along substantially the entire periphery of the circular display, the 153 equiangular parts grouped into five segments, the first segment having 31 equiangular parts, the second segment having 30 equiangular parts and being labeled â€œAprilâ€ and â€œSeptemberâ€, the third segment having 31 equiangular parts and being labeled â€œMayâ€ and â€œOctoberâ€, the fourth segment having 30 equiangular parts and being labeled â€œJuneâ€ and â€œNovemberâ€, and the fifth segment having 31 equiangular parts and being labeled â€œJulyâ€ and â€œDecemberâ€, respectively, in clockwise fashion around the circular display.