National Aids to Navigation Museum
US Coast Guard Training Center, Yorktown, VA http://www.uscg.mil/hq/rtc/Info/History/naton.shtm
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First Order Lens Base
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Classical Bivalve Lense from Dry Tortugas Light
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PICT7226.JPG
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Bulb Changer
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4th Order Fresnel Lens, Rotating Drum Design
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PICT7234.JPG
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Third Order Fresnel Lens, Drum Design
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PICT7241.JPG
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PICT7243.JPG
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PICT7244.JPG
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6th Order Fresnel Lens, Fixed Drum Design
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4th Order Fresnel Lens, Rotating Bi-Valve Design
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PICT7251.JPG
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PICT7252.JPG
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4th Order Fresnel Lens, Rotating Bi-Valve Design, Made in the USA
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PICT7262.JPG
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PICT7263.JPG
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PICT7264.JPG
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5,000 Watt 220 Volt Gas Filled Siemens England
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PICT7267.JPG
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4th Order Fresnel Lens, Rotating Drum Design
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PICT7276.JPG
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PICT7279.JPG
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PICT7281.JPG
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Holding the camera inside the 1st order lens
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PICT7284.JPG
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PICT7286.JPG
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PICT7297.JPG
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PICT7309.JPG
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Bulb in the big bi-valve lens
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PICT7314.JPG
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Assembly Instructions
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PICT7322.JPG
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Canfield Hall
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PICT7329.JPG
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PICT7330.JPG
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PICT7331.JPG
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First Order Fresnel Lens