Ok thanks for that, and i guess you can get the spare red lenses from Spitfire Spares or someone? and i guess the top would slide off to insert the bulb (it's a lovely thing and i don't want to damage it). Just started collecting afew cockpit bits and bob's, we went to a shop on Steep Hill, Lincolnshire and my wife n i were both in awe of some of the gauges etc and they are so tactile....... slippery slope ahead me thinks!, back to Lincoln in 2 weeks ha ha ha.