Photograph. Section of Heat Blower unit, burners lit. Petroleum Warfare Department stamp on verso. Photograph of Heat Blower unit
Photograph. Heat Blower unit mounted on low loader lorry, front view. Unidentified people in background. Petroleum Warfare Department stamp on verso. Photograph of Heat Blower unit
Letter to A W Hendry, at RAF Station Gravely, from W T Moore, Petroleum Warfare Department, Queen Anne's Chambers, Dean Farrar Street, SW1, regarding the despacth of parts, for Project No. 01574, part of FIDO. Letter regarding Project No. 01574
Letter to A W Hendry, at RAF Station Gravely, from W T Moore, Petroleum Warfare Department, Queen Anne's Chambers, Dean Farrar Street, SW1 regarding despatch of parts and a request to arrange a trial of side by side Heat Blower units, for Project No. 01574, part of FIDO. Letter regarding Project No. 01574
Photograph. Heat Blower unit, burners lit, properllers turning, side view. Petroleum Warfare Department stamp on verso. Photograph of Heat Blower unit
Photograph. Section of Heat Blower unit, burners lit. Petroleum Warfare Department stamp on verso. Photograph of Heat Blower unit
Photograph. Close up section of coils on Heat Blower unit, burners lit. Petroleum Warfare Department stamp on verso. Photograph of Heat Blower unit
Photograph. Heat Blower unit mounted on low loader lorry, rear view. Unidentified person in background. Petroleum Warfare Department stamp on verso. Photograph of Heat Blower unit
Photograph. Close up section of Heat Blower unit, front view. Unidentified person in foreground. Petroleum Warfare Department stamp on verso. Photograph of Heat Blower unit
Photograph. Heat Blower unit mounted on low loader lorry, side view. Petroleum Warfare Department stamp on verso Photograph of Heat Blower unit
Temporary pass for A Wilson Hendry's visit to the Petroleum Warfare Department, Queen Anne's Chambers, Dean Farrar, SW1 Temporary pass for Petroleum Warfare Department
Photograph. Close up of section of Heat Blower unit, side view. Petroleum Warfare Department stamp on verso. Photograph of Heat Blower unit
Photograph. Section of Heat Blower unit, coils and burners, burners lit. Petroleum Warfare Department stamp on verso. Photograph of Heat Blower unit
Photograph. Heat Blower unit, burners lit, propellers turning, side view. Petroleum Warfare Department stamp on verso. Photograph of Heat Blower unit
Photograph. Section of Heat Blower unit, burners lit. Petroleum Warfare Department stamp on verso. Photograph of Heat Blower unit
Photograph. Close up of Heat Blower unit, coils and burners lit, side view. Petroleum Warfare Department stamp on verso. Photograph of Heat Blower unit
Photograph. Section of Heat Blower unit, burners lit. Petroleum Warfare Deaprtment stamp on verso. Photograph of Heat Blower unit
Photograph. Section of Heat Blower unit, side view, burners lit. Petroleum Warfare Department stamp on verso. Photograph of Heat Blower unit
