Reflecting type, fitted with about 45mm dia achromatic objective having focal length of about 45cm.

A 12V 100W halogen lamp mounted inawell ventilated metal housing.

A circular blacked metal screen 75mm dia, with a 10mm dia aperture and cross wire of 26 s.w.g. Wire.

Comprises 5-litre roundbottomed flask with cork support ring,25g fluorescein, packet Plasticine and one each +11D, +8D and +5.5D meniscus lens to demonstrate normal, long and short sight respectively. Correcting lenses of +2.5D and -3D included to demonstrate function of spectacles.