Conversion Center

Sign is an informal unit of angle measurement used in astrology. Astrologers divide the Sun's annual path through the sky (Zodiac) into 12 parts called signs and each sign corresponds one of the classic twelve constellations through which the Sun passes. So 1 sign is equal to 1/12 circle, or 30 degrees.

Flat is an infromal unit of angle measure equal to the angle of the equilateral triangle (60 degrees), or one sextant (1/6 circle). For example a hex nut have 6 flat sides. So to turn the nut "one flat" is to turn it 1/6 revolution.