Description1 compass : bamboo, metal, string, horsehair ; 4 in.;Handmade bunmawashi (compass) made of bamboo and metal with horsehair (?) paintbrush (2.75 in., 0.875 in. bristles) attached with string. Bamboo is split and jointed to make the compass; a tiny nail at one end serves as the pivot point. Bristles of the brush form a very fine point; black paint caked on.