Bow for double bass.

https://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~63304~102240/full/150,/0/default.jpghttps://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~63313~102238/full/150,/0/default.jpghttps://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~50208~102243/full/150,/0/default.jpg