Lined fishskin case for Farey's Ellipsograph
Black fishskin case for Farey's Ellipsograph.
Brass Farey's Ellipsograph, in original felt lined black fishskin case, with one small pair of pencil compasses for use with instrument.
Black fishskin case for Farey's Ellipsograph.
Brass Farey's Ellipsograph with one small pair of pencil compasses for use with instrument.