Biunial (two-tier) magic lantern

A photo of a lantern projector. It is made from wood and has two lenses on its side.
https://www.nfsa.gov.au/sites/default/files/2025-07/Image-Biunial-%28two-tier%29-magic-lantern-432098.jpg
Title:
Biunial (two-tier) magic lantern
NFSA ID
432098
Year
1890
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Dating from the 1600s but hitting its stride in the 19th century, the magic lantern is considered the big brother of modern cinema. Biunial magic lanterns such as this 1890 model by J Ottoway and Sons could project superimposed images from two separate glass slides onto the same screen and create the illusion of movement.