The weekly astrological data are, for each day, represented by a single narrow band corresp. to a linear development of the zodiac. The bands are arranged consecutively on a double entry astronomical table. The horoscope is indicated by the signs contained within the frame of a window formed in a slide. The window is of the same dimensions as each of the bands. The table and slide can be moved relative to each other so that the window successively uncovers each of the bands of the table. The angular posn. of each star isgn is indicated, in each weekly astronomical band, by a point representing this posn. on the zodiac linear development at midday GMT. The posn. of each star is indicated by a continuous line interpolating the calculated angular posns. for midday GMT and transferred onto the linear development.
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