The listerCompass is fast, smart and designed for practical use by a structural geologist.
If you want to measure a surface, put your iPhone anywhere on it.
If you want to measure the surface, and a lineation on that surface,
orient the iPhone on the surface so that it is oriented with its long axis parallel to the lineation.
The best things about it [tested now by using it extensively under (dry) field conditions]
| 1) It can be used upside down under an overhang |
| 2) A foliation and a lineation can be measured at the same time, simply by touching the screen |
| 3) A simple double tap allows information to be recorded |
| 4) Its flexible <XML> output allows data to be used by other programs such as iGeologist |
| 5) The map view screen now allows placemarks to be added (and saved using KML <XML> which allows files to be dragged onto and used with Google Earth |
STRIKE-DIP-RAKE
| 1) strike is given as a single number such that the dip is to the right |
| 2) dip is the inclination of the surface plane of the compass, no matter what direction the compass is pointed |
3) rake is the (anticlockwise) angle of rotation that links the strike direction
of the plane being measured, to a line on that plane. Rake is positive if the direction of rotation is anticlockwise from the strike. |
YAW-PITCH-ROLL
| 1) yaw is the plunge direction, or trend, of the lineation |
| 2) pitch, or plunge, is the inclination of the line to the horizontal |
| 3) roll is the angle between the surface and a plane that includes the lineation, but strikes at right angles to it |
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