500mm 4th order AGA FRESNEL LENS BUOY LIGHT W/ MANTLE CHANGER BASE

500mm 4TH ORDER FRESNEL LENS AGA Acetylene powered Buoy Light with Mantle Changer Bronze Base. This is the Largest of it's kind, made with 4 mantle changer to make it the most reliable aid to navigation in the world at the time. Built by AGA i Sweden Ca 1920, this awesome beast was used aboard a Lightship in the Persian Gulf for over 40 years until De-commissioned in the 1960's. It has undergone a 2 year restoration, and now is clear coated for display. The entire Mechanism is intact and the Mantle Changer is still functional. The AGA Sunvalve is also included. The Sunvalve is a work of art in itself, as it was the worlds forst practical "photocell". It would sense light and shut off the supply of gas in the morning, and then re - light the gas at nightfall. This doubled the time between service and was a great savings the Maritime Authorities. NEAR PERFECT 4TH ORDER 500MM FRESNEL LENS INSIDE. INFO FROM MENAS: - 500mm with the DKEL mixer/flasher with mantle lamp changer base assembly was never fitted to any light floats (vessels), all light float’s were originally fitted with K240 flasher units then we converted them to solar around 1995. We retained the lanterns and replaced the K240 with electric lamps. I am pretty sure the lantern in question was first fitted on Fujairah Beacon in 1981. The lantern assembly came from AGA-UK and was probably a refurbished unit. The light was converted to solar but still retaining the lantern. We found that we could increase the range of the lights up to 15nm (T74) using the existing lenses and halogen lamps.

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