Volume Twelve - Pre-Victorian to the Present Day - further aspects - Defence of the Realm - Penarth Head Fort and Coastal Battery . . .

6-inch guns were one of the stalwarts of British coast defence ever since the first marks appeared during the early 1880's on a variety of barbette and disappearing carriages, but when the Mark 7 appeared in 1898 it gradually replaced all the earlier models. Produced in greater numbers than any other of a bewildering array of 6-inch gun marks and sub-marks, the Mark 7 was deployed all around the world on four marks of pedestal mounting. [1036]

	c.1900 and 1905 - Photographs of the Gun Workshops of Messrs. Vickers Sons & Maxim at Sheffield.
	c.1898 - Photographs of the gun production facilities at the Elswick Works, Newcastle upon Tyne.
	c.1928 - No. 1 and No. 2 Emplacement Defence Electric Lights (DEL) at the base of Penarth Head  - detailed images of the structures. Various postcard views from the 1920's.