luopan; feng shui compass; geomantic compass
A specialized tool used in feng shui (風水) to determine auspicious directions and analyze energy flow. The term is technical and primarily encountered in contexts related to Chinese geomancy.
See also: 風水 (ふうすい)
The feng shui master used a luopan to check the house's orientation.
風水 refers to the practice of feng shui itself, while 風水羅盤 is the physical compass used in that practice.
Compound of 風水 (feng shui) and 羅盤 (compass). The term is a direct borrowing from Chinese concepts and terminology.