Filters (5 applied)Clear All
- type : Technology (remove)
- related units : 26th Australian Infantry Battalion (remove)
- related subjects : Periscopes (remove)
- maker : Unknown (remove)
- has video : no (remove)
Maker: UnknownCollapsible trench periscope. The body is made from a series of six telescopic metal rings which can be extended for use, or collapsed for storage. At the top of the periscope is a rectangular mirror ...