The sijoo index device which follows in time evolution of seasonal datum

摘要

PURPOSE: A temporal fortunetelling indexing device including a rotary twelve earthly branches is provided to easily calculate a sexagenary cycle according to time changes in solar terms. CONSTITUTION: A fixed time board (2) prints one day on a surface by dividing a day into hours and minutes. A rotary twelve earthly branches board (3) successively prints twelve branches on the surface of the fixed time board. A rotary axis (4) connects the fixed time board to the center of the rotary twelve earthly branches board by freely rotating the rotary twelve earthly branches board on the lower part of the fixed time board.