Description

PERISCOPE

PERISCOPE:

This is an instrument for observation over, around or through an object, obstacle or condition that prevents direct line-of-sight observation from an observer’s current position. it consists of an outer case with mirrors at each end set parallel to each other at a 45° angle. This form of periscopes, with the addition of two simple lenses, served for observation purposes in the trenches during World War I. Military personnel also use periscopes in some gun turrets and in armoured vehicles.

Specifications:

• An optical instrument that permits the view of an otherwise obstructed field above or below the level of viewer.
• Comprising a Z-shaped square tube with both the projecting arms having plane mirrors mounted at 45 º facing each other. 1110640/1 Periscope, plastic.

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