11 – Inclination
Inclination is the angular difference from horizontal (0°). The Eclipse 8099 implements three
clinometer scales, where each is incremented in degrees. The three clinometers are the 5° hinge,
5° card and the 1° graduated dial clinometer.
11.1 5 Degree Hinge Clinometer
This is the quickest method of measuring inclination. The resolution of the scale is 5°, with 2.5°
readable accuracy.
1. Remove rubber shoe to reveal the 5° clinometer scale, located on the end of the hinge.
2. Open the sight cover to at least 120°.
3. Hold the Eclipse 8099 at eye level with 5° scale facing you, and extend to arms length.
4. Sight object behind the Eclipse 8099. (Fig 35)
5. With the base level, open cover until it reaches the inclination of the object sighted.
6. Read inclination at the white index line, on the hinge – 40°, figure 35.
11.2 5 Degree Card Clinometer
Use 5° clinometer (reference card 1), for this method. Notice the resolution of the scale on the
card is 5°, so use this method to sight inclination up or down from the horizon, with 2.5°
readable accuracy.
11.2.a -- Edge Sighting
1. Make sure the 5° clinometer, reference card 1, is centered under the vial.
2. Open sight cover to 120°.
19
Figure 35
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