Bow for double bass.

https://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~52728~104859/full/150,/0/default.jpghttps://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~52707~104436/full/150,/0/default.jpghttps://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~52718~104438/full/150,/0/default.jpg