Paragraph 6.4.2.2 Position of the measuring points on a hemisphere of radius r
In the case of a hemisphere there shall, in principle, be 12 measuring points with the following coordinates (see Figure 2) although, for the measurements on lawnmowers, not all are used:
x(x/r) r
(y/r) r
(z/r) r
The values x/r, y/r, z/r and z are given in Table 1:
Table I
| x/r | y/r | z/r | z | |
|---|---|---|---|---|
| 1 | 1 | 0 | — | 1.5 m |
| 2 | 0.7 | 0.7 | — | 1.5 m |
| 3 | 0 | 1 | — | 1.5 m |
| 4 | −0.7 | 0.7 | — | 1.5 m |
| 5 | −1 | 0 | — | 1.5 m |
| 6 | −0.7 | −0.7 | — | 1.5 m |
| 7 | 0 | −1 | — | 1.5 m |
| 8 | 0.7 | −0.7 | — | 1.5 m |
| 9 | 0.65 | 0.27 | 0.71 | — |
| 10 | −0.27 | 0.65 | 0.71 | — |
| 11 | −0.65 | −0.27 | 0.71 | — |
| 12 | 0.27 | −0.65 | 0.71 | — |