Periscope for Swedish coastal artillery 7.5 cm turret gun m/57. Circa 1960.

By OPL (Optique et Précision de Levallois), France.

Double periscope, 2 x magnification, 2 & 10 times, filters. (orange, light grey, dark grey, light blue and clear).

Height: 77 cm.

Made for the Swedish KA, Coastal Artillery, From the Gotland battery.

For similar periscope see the collection of the Gotland Defence Museum.

Société Optique et Précision de Levallois, S.A. (OPL) was founded in 1919. It produced rangefinders, military, medical, and scientific optics, at Levallois and Châteaudun, France.