| Camera Maker | Nikon Corporation | Camera Model | NIKON D90 |
| Aperture | f/22 | Color Space | sRGB |
| Exposure Value | 1 EV | Exposure Program | Aperture Priority |
| Exposure Time | 13 sec | Flash | No Flash |
| Focal Length | 18 mm | ISO | 200 |
| Metering Mode | Pattern | Date/Time | 2017:10:13 18:05:09 |
| Resolution Unit | Inch | X Resolution | 240 dots per ResolutionUnit |
| Y Resolution | 240 dots per ResolutionUnit | Compression | Jpeg Compression |
| Contrast | 0 | Exposure Mode | 0 |
| Saturation | 0 | Scene Type | Directly Photographed |
| Sharpness | 0 | Subject Distance | 1.41 |
| Caption | This ancient odometer would drop a pebble into the box for each revolution of the wheel. Multiply the number of pebbles by the circumference of the wheel and you have the distance traveled. With minor enhancements and size reduction with modern materials, this became the common <a href=https://en.wikipedia.org/wiki/Surveyor%27s_wheel>surveyor's wheel</a>. |