Lens

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Ingenium, 2012.0481.002
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OBJECT TYPE
F8/IRIS/NON-FOCUS
DATE
Unknown
ARTIFACT NUMBER
2012.0481.002
MANUFACTURER
Unknown
MODEL
Ensign
LOCATION
United Kingdom

More Information


General Information

Serial #
N/A
Part Number
2
Total Parts
6
AKA
N/A
Patents
N/A
General Description
Brass (possible) lens body with glass lens

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length
3.5 cm
Width
N/A
Height
N/A
Thickness
N/A
Weight
N/A
Diameter
4.0 cm
Volume
N/A

Lexicon

Group
Photography
Category
Still camera parts
Sub-Category
N/A

Manufacturer

AKA
Unknown
Country
United Kingdom
State/Province
Unknown
City
Unknown

Context

Country
Unknown
State/Province
Unknown
Period
1895-1954
Canada
This is an extremely rare of collection documenting the work and processes of a slide preparer, C.R. Percival. Slide preparation is the foundation of microscopy and its images and yet seldom has this kind of history been told, and almost never preserved in material form. C.R. Percival had learned the art and science of slide preparation in England at the turn of the century. He then took up the trade in Toronto where he spent the majority of his life. Above all, this collection provides a comprehensive understanding of the multilayered material, scientific, artisanal, commercial and social processes behind the production of microscopic images. In an era when people and especially students take for granted the creation of scientific imagery, this collection documents in rich, well preserved historical detail the means microscopic images are created (and interpreted) within particular historic conditions. The Canadian and British provenance for this collection is very well-documented back to C.R. Percival. (From Acquisition Worksheet, see Ref. 1)
Function
An attachment for a still camera that allows light entering the camera to form an image.
Technical
Unknown
Area Notes
Unknown

Details

Markings
On the proper front: ""ENSIGN"/ SYMMETRICAL F-8"/ In black on the side of the lens body: "45/ 32/ 22/ 16/ 11/ f8"
Missing
Appears complete
Finish
Predominantly bright brass-coloured metal with black proper front and proper back and clear glass.
Decoration
N/A

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

Unknown Manufacturer, Lens, Unknown Date, Artifact no. 2012.0481, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/2012.0481.002/

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