A potter uses a metal bracelet as a roulette to make shallow grooves on the leather-hard surface of a cooking pot (sro chÍ» in Nafaanra). She rolls the bracelet across a surface that has been textured using a maize cob (bledjukaan in Nafaanra) roulette. Next she will make shallow grooves along the boundary between the smooth upper body of the jar and the maize cob-routletted lower areas. Dorbour, 1994.