Comprising a wooden baseboard 1.1 mtr. x 14 cm. with one scale graduated in millimeters, fixed along the front edge and complete with the following accessories:
01 Object and receiving screens one comprising a white card having an aperture and index 150 x 100 mm & one with wire gauze at the center mounted on a wooden base 100 x 50 mm with an index mark at the end.
01 Plane mirror 150 x 100 mm, mounted on a wooden base as above.
01 Lens holders, each comprising a wooden upright with a ‘V’ shaped slot to hold lenses up to 75 mm diameter, mounted on a wooden base 100 x 50 mm with an index line at the end.
01 Needle mounted vertically in a short wooden rod in the center of a wooden base 100 x 50 mm.
01 Candle holder.