bn:00061627n
Noun Concept
Categories: Optical devices, 1902 introductions, All articles containing potentially dated statements, Submarine components, Articles containing potentially dated statements from 2009
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
Relations
Sources
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