Objective lens retained spring. As Patt 152BP above but with ref.511 hanging bracket. Slide carrier and lamp are cooled by silent blower in lantern base. Turntable to set angle of travel of effect and runners for colours or mask, and for objective lens assembly. Discs, with break-up glass where necessary, are available without cases.
Discs are only interchangeable with effects of the same letter reference.
Otherwise as above. British lenses, and backplate to fit effect attachment runner. High Definition for Patt. These high quality lenses must be used for scene projection and many effects are also improved by their use as the black areas are not spoilt and strong contrast results. A backplate is required to fit the lens to effect or turntable front.