Manufacturer: Thos. Firth & John Brown Ltd.
Original 1950 Advert Firth Brown Alloy Steels Aircraft Engineering
Original 1950 Advert Firth Brown Alloy Steels for Engineering
Original 1950 Advert Firth Brown Tools High Speed Twist Drills
Original 1955 Advert Firth Brown Steel Bars Heat Treatment
Original 1950 Advert Henry Wiggin Nimonic Alloy Gas Turbine Blades
Original 1950 Advert Blackburn Buccaneer Low-Level Strike Aircraft
