Classical 4th and 5th Order Fresnel Lenses

TITLE:   Fresnel Lens

CAPTION:  Fresnel Lens:
1. Classical fourth order manufactured by Barbier, Benard & Turenne.
2. Classical fifth order manufactured by L. Sautter & Cie, used in Michigan City lighhoused (sic) 1858-1982.
POSTCARD ID:  None
PUBLISHER:  Custom Graphic Prducts by Creeko Creations
POSTMARK: None ~ Not Used Postally