A Great Collapsible Field- Periscope 



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A giant Gfrmyn (klil- periscope captured by the French during the earher 

 battles on the Somme. It was constructed by Zeiss, of Jena. The iUustralion 

 shows it elevated to a height of fifty feet, the carriage supporting the collapsible 

 tube at that height without any props or other assistance. However, with 

 the aid of stays and struts, the periscope can be extended to eighty-five feet, 

 its greatest height. The insert shows the instrument packed for transporting 



CGO 



