bn:00061627n
Noun Concept
Categories: 1902 introductions, Submarine components, British inventions, Articles containing potentially dated statements from 2009, All articles containing potentially dated statements
EN
periscope  Aircraft periscope  Demo periscope  golf mirror  Golf Periscope
EN
An optical instrument that provides a view of an otherwise obstructed field WordNet 3.0
Definitions
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EN
An optical instrument that provides a view of an otherwise obstructed field WordNet 3.0 & Open English WordNet
A periscope 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. Wikipedia
Device for viewing things past obstacles. Wikipedia Disambiguation
Instrument for observation from a concealed position Wikidata
WordNet 3.0 & Open English WordNet
Wikipedia
Wikidata