For ‘Fettlers’ Arms’ beer tent-to-toilets night-time journeys and in the Newark spirit, to be used instead of an led torch or cap lamp. A carbide lamp of course, of the larger kind, seen here alongside a carbide bicycle lamp. Inherently bright, this photo is deliberately under-exposed to show the shape of the burner flame … … and as it appears to the naked eye. A Lucas ‘King of the Road’ product, which was the company’s designation of their top-of-the-range products. Of course, the London, Midland and Scottish railway would expect nothing less. John