R & J Beck no.14 (17") periscope

[dave8888]

Hi all, just purchased this no.14 periscope and was wondering if any of you had some knowledge on them, i have spent some time searching the net but to little or no avail. Some one said it was probably used by the artillery foo's or trench mortar teams.It is war department stamped which means it was an issued piece of kit rather than a private purchase like the other r j beck periscopes - i think? Any help greatly appreciated.

p.s i have a link to a picture sharing site as they were too large for this site!.......

http://s252.photobuc...8v8e/periscope/