It is in good solid usable condition as per the photos. It would transform that old lamp very well. 70 mm Long reach adjuster shaft.
OIL RAILWAY LAMP MANUF. Co SOLID BRASS BURNER & WICK c 1930 85MM SHAFT
Antique "Adlake" Non-Sweating Oil Railway Lamp BR (E)
Adlake Non-Sweating Oil Railway Lamp with Clear Bullseye Lens
Antique "Adlake" Non-Sweating Oil Railway Lamp
BRITISH RAILWAY OIL LAMP MANUF Co BURNER LONG SHAFT 90MM STD APERTURE & TWINWICK