File:Comparator - DPLA - 5b1b7a2ec4e0c61adc97f3f6c1da73ad.jpg
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Summary
[edit]Comparator ( ) | |||||||||||||||
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Creator InfoField | Watertown Arsenal (Mass.) | ||||||||||||||
Title |
Comparator |
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Description |
Title from item.; Additional text from item: Provides a check on size and shape with a choice of a 20 to 1 ratio or on a ratio of 62-1/2 to 1. The check is obtained by reflecting the work to a large mirror in the rear and in turn back to a screen facing the operator. The 62-1/2 to 1 ratio will mag. a .001" error to 1/16" on screen.; Date from item or accompanying material. |
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Date |
between 1942 and 1959 date QS:P571,+1950-00-00T00:00:00Z/7,P1319,+1942-00-00T00:00:00Z/9,P1326,+1959-00-00T00:00:00Z/9 |
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Collection |
institution QS:P195,Q29982657 |
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Source/Photographer |
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Permission (Reusing this file) |
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Standardized rights statement InfoField |
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 19:26, 2 November 2022 | 1,005 × 800 (233 KB) | DPLA bot (talk | contribs) | Uploading DPLA ID 5b1b7a2ec4e0c61adc97f3f6c1da73ad |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Date and time of data generation | 16:43, 23 August 2017 |
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Serial number of camera | 3021885 |
Lens used | 60.0 mm f/4.0 |
Software used | Capture One 8 Macintosh |
Date and time of digitizing | 16:43, 23 August 2017 |
File change date and time | 06:57, 21 September 2017 |
Date metadata was last modified | 06:57, 21 September 2017 |
Unique ID of original document | xmp.did:7FBEF1E09E216811822AFD54440B2CEB |
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image/jpeg
Comparator (English)
Title from item. (English)
Additional text from item: Provides a check on size and shape with a choice of a 20 to 1 ratio or on a ratio of 62-1/2 to 1. The check is obtained by reflecting the work to a large mirror in the rear and in turn back to a screen facing the operator. The 62-1/2 to 1 ratio will mag. a .001" error to 1/16" on screen. (English)
Date from item or accompanying material. (English)
26677eacca034868f4b6e0e216614d6e9ba27ff1
238,534 byte
800 pixel
1,005 pixel
Hidden categories:
- Media contributed by the Digital Public Library of America
- Media contributed by Digital Commonwealth
- Media contributed by National Archives at Boston
- PD US
- Artworks without Wikidata item
- US National Archives series: Photographs Related to the Watertown Arsenal, 1908 - 1984
- Files with no machine-readable author