File:Lucy Baldwin Obstetric Analgesia Apparatus.jpg
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![File:Lucy Baldwin Obstetric Analgesia Apparatus.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/5/51/Lucy_Baldwin_Obstetric_Analgesia_Apparatus.jpg/239px-Lucy_Baldwin_Obstetric_Analgesia_Apparatus.jpg?20160610145359)
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[edit]DescriptionLucy Baldwin Obstetric Analgesia Apparatus.jpg |
English: Lucy Baldwin Apparatus for Obstetric Analgesia. circa 1970. Manufactured by BOC. Formerly used at the Princess Royal Infirmary at Huddersfield. Now on display in the Thackray Medical Museum, Leeds. Used to supply an adjustable mixture of oxygen and nitrous oxide for inhalation by mothers giving birth in order to provide pain relief. The two gas cylinders fitted in the brackets below. A hose attached to a mask was connected to the central spigot. The lever around this was moved to vary the mixture between 70% N2O / 30% O2 to 100% O2. |
Date | |
Source | Own work |
Author | Chemical Engineer |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:53, 10 June 2016 | ![]() | 795 × 1,994 (711 KB) | Chemical Engineer (talk | contribs) | User created page with UploadWizard |
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Camera manufacturer | Microsoft |
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Camera model | Lumia 640 LTE |
Exposure time | 20,003/500,000 sec (0.040006) |
F-number | f/2.2 |
ISO speed rating | 320 |
Date and time of data generation | 12:56, 9 June 2016 |
Lens focal length | 2.95 mm |
JPEG file comment | LEAD Technologies Inc. V1.01 |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Microsoft Windows Photo Viewer 6.1.7600.16385 |
File change date and time | 20:39, 9 June 2016 |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 12:56, 9 June 2016 |
Meaning of each component |
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APEX shutter speed | 4.64364 |
APEX aperture | 2.28 |
APEX exposure bias | 0 |
Metering mode | Average |
Light source | Unknown |
Flash | Flash did not fire, auto mode |
DateTimeOriginal subseconds | 432 |
DateTimeDigitized subseconds | 432 |
Supported Flashpix version | 1 |
Color space | sRGB |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 30 mm |
Scene capture type | Standard |