An apparatus containing a magnifying lens arranged for viewing engravings, photographs, etc.

A modified form of zoetrope used to project a series of photographic images of animals or other subjects in order to display their movement; cf. zoo…

A modified form of zoetrope used to project a series of photographic images of animals or other subjects in order to display their movement; = zoogyro…

a device for superposing three specially prepared photographs of an object so as to produce an image in the natural colours.

A device for viewing a set of three monochrome photographs stereoscopically through red, green, and blue filters so that they are seen as a…

A viewer for the three positives of a chromogram, enabling them to be visually combined and seen as a single coloured picture. Frequently attributive…

An optical device used for viewing images recorded on a particular medium, esp. those recorded on microfilm.