What exactly would be the name / official designation for this cage-shaped thing carried by the lads on the first photo below,
used as "crib grillage" for basing Bailey Bridges,
and apparently pretty standard given the numbers used in the second photo (Monty's Bridge in Caen):
http://www.mapleleafup.net/forums/at...1&d=1533069019
http://www.mapleleafup.net/forums/at...1&d=1533068651
Source:
http://sgmcaen.free.fr/les-ponts.htm and
https://www.flickr.com/search/?user_...1&text=p010415
Michel