The photo on this wiki page
https://trigpointing.uk/wiki/File:Level ... _on_fb.jpg
was obtained from the National Archives at Kew, document reference OS 51/428.
It depicts a Flush Bracket being used for levelling.
The accompanying description is limited to
"use of staff on the side of a brick wall, circa 1940s, 1950s".
Is anyone able to identify the location, please.
Thanks
