Decorative iron-work grille
The iron-work grille in the staircase was unveiled on 10 February, 1925 by the Most Worshipful Grand Master Mason, the Earl of Stair. It was designed by Thomas McRae and executed by Thomas Bogie.
The grille was presented to the Lodge by its Past Masters, along with the I.P.M. Dr Radford, who was Master in 1924 when the staircase was built. The design incorporates various marks: