Super Siren Gives Warning Heard Two Miles Away
Item
Super sirens that can be spotted in the most advantageous positions for spreading “air raid alert” alarms have been designed for installation in New York City. Capable of projecting its sound a distance of two miles, the siren is 36 inches high and operates on four horsepower.
Title (Dublin Core)
Super Siren Gives Warning Heard Two Miles Away
Subject (Dublin Core)
en
Technology
Article Title and/or Image Caption (Dublin Core)
Super Siren Gives Warning Heard Two Miles Away
Language (Dublin Core)
Eng
Temporal Coverage (Dublin Core)
Date Issued (Dublin Core)
1942-04
Is Part Of (Dublin Core)
pages (Bibliographic Ontology)
86
Rights (Dublin Core)
Public domain
Source (Dublin Core)
References (Dublin Core)
Archived by (Dublin Core)
Enrico Saonara