“Interior of Barracks 17 AA Coy., North Queensferry” – a detective story

Update – November 2021

 
Pages 64 and 65 of “Fortifications of the Firth of Forth” by Gordon Barclay and Ron Morris cover the WWI Anti-aircraft defences of the Forth.

“In February 1915, the anti-aircraft gun defence of the Forth (at least that element of it under Army control) comprised two 6-pdr QF guns at Rosyth (one for the dockyard and one at the oil tanks) and two 1-pdr pom-pom guns on travelling carriages at the Armaments Depot at Crombie.

By 1 June 1917, the number of AA guns in the Forth had increased to 20 including – Ferry Hill (North Queensferry) – 3-inch (20cwt)“

So my money is on the location being Carlingnose rather than Ferry Barns.