Métascope

Also known as: Métamagasin

Le Métascope was one of the last tray-based designs that was introduced in France, and different models were available. The frosted glass at the back of the device is used to illuminate the glass slides and can be removed to attach an optional projection lantern or electric illuminator. In this case, a larger frosted glass is mounted inside the device to replace the removed glass plate.

Models:
The model for 
45 x 107 glass stereoviews was named Métascope Spéciale.

Le Métascope Universel supported interchangeable trays for 45 x 107 and 6 x 13 / 7 x 13 slides, so multiple stereoview formats could be viewed with a single device.

Le Métamagasin included a storage compartment for storing slide trays.

Operation:
To place a slide tray, the lid on the top and the front panel must be opened. The lever that loads the slides is in the down position and locked. After the slide tray is inserted, the lever is unlocked and moves upward. The first stereoview is positioned in front of the lenses. The slides are displayed one by one by pushing the lever down repeatedly. An indicator on the right side of the device shows which slide is loaded. With the lever in the locked position, the indicator can also be used to quickly navigate to a specific image.

Specifications:

Patents and registrations:

Number: 610736
Perfectionnements aux stéréoscopes
Filing: 08-02-1926, Publication: 11-09-1926, Applicant(s): Albert Georges Mattey. via: data.inpi.fr

Further reading: