Two rows of Murad capstan lathes in the works of Reyolle Ltd. of Tyneside, at the time, with over 7000 employees, Britain's largest manufacturer of heavy-duty transmission-line switchgear and associated products . These lathes were making components used in instruments and relays used to protect circuits against electrical faults.

More Murad capstans at work in the factory of Fry's Diecastings Ltd. More than 50,000 components were machines every day on these lathes. Nothing is cheaper than daylight and, whilst the deep, steel-framed windows indicate this to be a factory almost certainly erected in the 1920s or 1930s the high-intensity overhead lamps show that the photographs  was almost certainly taken in the 1940s or early 1950s.