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Water-flow meter by Secretan of Paris

Water-flow meter by Secretan of Paris

1870-1900
Current flow meter

Current flow meter

1850
Photographic Lens

Photographic Lens

1845-1890
Planimeter in case

Planimeter in case

Square Bellows Wet-Plate Camera, with Lens Cap

Square Bellows Wet-Plate Camera, with Lens Cap

1860
Symmetrical lens

Symmetrical lens

circa 1880
Water-flow meter

Water-flow meter

1870-1900
Aplanat or Simple Landscape Lens.

Aplanat or Simple Landscape Lens.

circa 1890
Dew-point hygrometer by Secretan

Dew-point hygrometer by Secretan

1845-1900
Achromatic Compound microscope

Achromatic Compound microscope

1845-1900
Brass Landscape Lens

Brass Landscape Lens

1870-1875
Achromatic Landscape Lens

Achromatic Landscape Lens

1860-1870
Mahogany camera with fixed front panel and sliding rear panel extended to 6 1/2 cm at front to accommodate the longer focal length lens. With ground glass screen holder, one wooden single plate holder with frame 4 1/4 x 3 1/4 wet plate. Lens is a Lerebois et Secretan lens, Petzval type F:9 inch, No 3301, not original. Lens cap removed., c,1845

sliding body mahogany camera

1835-1855
Lerebours and Secretan landscape lens, c.24" focal length with brass lens cap. 12320.

Lerebours and Secretan landscape lens

Petzval type lens made by Lerebours and Secretan. C. F:22cm rack and pinion focussing flange. No. 9442 with brass lens cap.

Lerebours and Secretan Petzval lens

Daguerreotype lens, made by Lerebours, Paris. Lens for Daguerreotype camera c.40 cm. Focal lens f/13 sliding in 13cm diameter flange. Sliding brass lens cap. C.R.R. 188.

Daguerreotype lens

Lerebours and Secretan landscape lens, c.20" focal length. Number 0468. (M17/3)

Lerebours and Secretan landscape lens

Lerebours and Secretan landscape lens, c.20" focal length. Lens barrel in sliding mount..

Lerebours and Secretan landscape lens

Mahogany camera with fixed front panel and sliding rear panel extended to 6 1/2 cm at front to accommodate the longer focal length lens. With ground glass screen holder, one wooden single plate holder with frame 4 1/4 x 3 1/4 wet plate. Lens is a Lerebois et Secretan lens, Petzval type F:9 inch, No 3301, not original. Lens cap removed., c,1845

sliding body mahogany camera

1835-1855
Lerebours and Secretan landscape lens. Achromatic lens in mount with reflection reducing baffles. Three disc stops; F:39cm. 9174. (M17/4)

Lerebours and Secretan lens

Folding mahogany plate camera for 10x8 inch plates. Lens by Lerebours and Secretan, Paris. No 4949, F: 16 inches, 4 unmarked disc stops at lens front. Brass lens cap. Petzval type. Sliding rising front. Rack and pinion focusing on front panel. Reversible back, ground glass missing. Makers nameplate missing. With two bookform wooden double darkslides, with adaptors for smaller plates.

Folding Plate Camera with Darkslides and Adaptor

1845-1890
Wooden sliding box camera; with lens by Lerebours et Secretan, Serial No 5309; without plateholder; c. 1850.

Wooden Sliding Box Camera

1850
Folding mahogany plate camera for 10x8 inch plates. Lens by Lerebours and Secretan, Paris. No 4949, F: 16 inches, 4 unmarked disc stops at lens front. Brass lens cap. Petzval type. Sliding rising front. Rack and pinion focusing on front panel. Reversible back, ground glass missing. Makers nameplate missing. With two bookform wooden double darkslides, with adaptors for smaller plates.

Folding Plate Camera

1845-1890
Lerebours et Secretan lens c. F:14 inches, landscape achromatic type. Aperture for disc stops, approx. f/14. No.8976.

Lerebours et Secretan lens c. F:14 inches