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bn:00061627n
Noun Concept
Categories: Submarine components, Optical devices, All articles containing potentially dated statements, Articles with short description, 1902 introductions
EN
periscope  Aircraft periscope  Demo periscope  golf mirror  Golf Periscope
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EN
An optical instrument that provides a view of an otherwise obstructed field WordNet 3.0
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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
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