| 摘要 |
The invention, in one aspect, provides an electronic orientation monitor. The monitor includes an orientation sensing electronics configured for calibration when in a 5 reference orientation and being responsive to manipulation of the monitor so as to calculate first, second and third angles which together represent a difference between a current orientation of the monitor and the reference orientation. The monitor further includes a display being responsive to the first and second angles so as to display a point positioned relative to first and second axes, the display being further responsive to 10 the third angle so as to display a line having a direction relative to the first and second axes such that a combination of the position of the point and the direction of the line is indicative to a user of the difference between the current orientation of the monitor and the reference orientation. nnooFooo------------~ 10000010000 Fig. 1 |
