Bow for monochord.

https://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~40341~104861/full/150,/0/default.jpghttps://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~53143~104564/full/150,/0/default.jpghttps://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~53131~104563/full/150,/0/default.jpg