File:Watkins Clinometer 1892 023.JPG
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DescriptionWatkins Clinometer 1892 023.JPG |
Watkin brass clinometer 1892, showing close-up of the micrometer drum. The instrument measures approx 6 x 4 x 2 in. Further information is given here, where it says that: " This instrument was used for measuring and laying out angles. The sensitive bubble level is held between pivots and connected to a lever which is held against the underside of the micrometer drum by a spring. The bronze frame has two surfaces at right angles enabling any slope between 0 and 90 degrees to be measured, between 45 and 90 being accomplished using the upright face and subtracting the angle read from 90 degrees. With it on the surface to be measured, the micrometer drum is rotated to bring the bubble to the centre of the tube. The angle is then read from the drum against the index mark on the collar. It is divided to five minutes of arc. (In the late 19th century) Watkin clinometers were used by the military for checking the elevation of gun barrels." |
Date | |
Source | Own work |
Author | Storye book |
Permission (Reusing this file) |
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:54, 9 August 2015 | 4,000 × 3,000 (5.42 MB) | Storye book (talk | contribs) | {{Information |Description=Watkins brass clinometer 1892, showing close-up of the micrometer drum. The instrument measures approx 6 x 4 x 2 in. Further information is given [http://www.mathsinstruments.me.uk/page74.html here], where it says that: " Th... |
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Camera manufacturer | Panasonic |
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Camera model | DMC-TZ9 |
Exposure time | 1/30 sec (0.033333333333333) |
F-number | f/3.3 |
ISO speed rating | 160 |
Date and time of data generation | 08:48, 9 August 2015 |
Lens focal length | 4.1 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Ver.1.0 |
File change date and time | 17:18, 9 August 2015 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 17:18, 9 August 2015 |
Meaning of each component |
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Image compression mode | 3.784092848609 |
APEX exposure bias | −1 |
Maximum land aperture | 3.44 APEX (f/3.29) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Exposure mode | Auto bracket |
White balance | Auto white balance |
Scene capture type | Standard |
Sharpness | Normal |