The 1" Hinchburner, suitable for the Gimbal lamp, article code 8917/O.
This 1" hinch burner is the only burner by DHR which is not indicated in Ligne. This is because it's an English model burner. DHR purchased the production line of this burner around 1992 of the English company Bocock and sons from Birmingham. And, because of the metric sytem, all English burners where in Inch and so is this burner.