Unconverted non-aerated 12 jet burner assembly
1970
Slit union jet, in brass, post 1830s.
Slit union jet, in steatite, probably 1880-1890.
First platinum jet
SNECMA "Escopette" pulse jet
First platinum jet
Unconverted non-aerated 18 jet burner assembly from a modern gas fire
1970