Conversion Center

Dekan is a unit of angle measurement equal to 10 deg, or 1/36 circle. This unit was used by ancient Egyptians, which divided the circle of the Zodiac into 36 divisions. These divisions was called by the Greeks as dekans. The unit is still used sometimes in astrology, where one dekan equals 1/3 sign.

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.