File:Fresnel lens manufacturer plate (9d5fdb74-79bc-455f-bc43-b3636cca815f).JPG

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Summary[edit]

English: Fresnel lens manufacturer plate
Photographer
English: NPS
Title
English: Fresnel lens manufacturer plate
Description
English:

The metal plate is screwed to a post. It says L.Sautter & C. Constructeurs A Paris

Fresnel lens manufacturer plate at Au Sable. The Fresnel lens is used in lighthouses to concentrate the light into a relatively narrow beam.

  • Keywords: Pictured Rocks National Lakeshore; piro; au sable; lighthouse; light station; lake superior; L. Sautter; Fresnel lens
Depicted place
English: Pictured Rocks National Lakeshore, Alger County, Michigan
Date Taken on 15 September 2004
Accession number
9d5fdb74-79bc-455f-bc43-b3636cca815f
Source
English: NPGallery
Permission
(Reusing this file)
Public domain This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.
NPS Unit Code
InfoField
PIRO

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current19:52, 15 January 2022Thumbnail for version as of 19:52, 15 January 20222,580 × 1,720 (510 KB)BMacZeroBot (talk | contribs)Batch upload (Commons:Batch uploading/NPGallery)

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