Brunton 8097 Instruction Manual

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[Page 1] Brunton 8097

E C L I P S E 8 0 9 7 INSTRUCTION MANUAL Section 1 – ORIENTATION (Brunton Eclipse 8097) Page(s): 1 - 2 Section 2 – MAGNETIC DECLINATION 2 - 4 Section 3 – FIELD BEARING 4 - 5 Section 4 – DIREC...

[Page 2] Brunton 8097

1 -- Orientation: Brunton Eclipse 8097 The Eclipse 8097 compass is a sighting instrument which uses the Earth’s magnetic field to display a bearing (direction) in degrees, with respect to true or magnetic north. The orientation section provides a...

[Page 3] Brunton 8097

Use the isogonic chart (Fig 3), or current United States Geological Survey (USGS), Bureau of Land Management (BLM), or another map to determine magnetic declination at your position. Declination can be east, west or even 0°, from your current positi...

[Page 4] Brunton 8097

Example: If magnetic declination at your position is 15° east, then magnetic north is 15° east of true geographic north. Figure 4 displays true geographic north and magnetic north, as indicated in the legends of USGS and BLM maps. Most maps use t...

[Page 5] Brunton 8097

4. Read bearing -- 170°. (Fig 7) To guarantee accuracy, switch with your partner and have your partner re-sight the object. Both bearings should be within 1° of each other. You can sight a field bearing without a partner, but the accuracy diminis...

[Page 6] Brunton 8097

7. Position clear base next to the line. (Fig 14) · Do not move the map. 8. Rotate azimuth ring until vial dis plays “circle over circle”. (Fig 15) 9. Read bearing. 6.2 Compass Alignment The compass alignment method allows for quick bearing...

[Page 7] Brunton 8097

6. Rotate azimuth ring until blue orienting circle points to the map’s true north. (Fig 18) · Align blue line in vial and red lines on graduated dial with drawn true north-south lines. 7. Read bearing. 6.3 Protractor And Centering Template U...

[Page 8] Brunton 8097

1. Adjust for magnetic declination. 2. Find three prominent landmarks in the field. 3. Orient map to true north. See section 6.1, Map Alignment, for help. 4. Find and mark all three landmarks with an ‘X’, and label them ‘1’, ‘2’ and ...

[Page 9] Brunton 8097

The following example uses a 1:24,000 scale, topo-map, with 1,000 meter UTM grid tick marks, indicated by three small zeros in the easting label, 47 90 000m E. 9.1.a -- 1:24,000 scale UTM Grid Coordinate Positioning 1. Identify and document t...

[Page 10] Brunton 8097

10 – Clip + Animal Alert / Rescue Whistle An animal alert / rescue whistle is included with the Eclipse 8097. Remove whistle from 8097 by depressing and holding retaining latch on the bottom of the whistle, and pull. To use whistle, position horiz...

[Page 11] Brunton 8097

E C L I P S E 8 0 9 7 MANUEL D’INSTRUCTIONS Section 1 – ORIENTATION (Brunton Eclipse 8097) Page(s) : 17 - 18 Section 2 – DÉCLINAISON MAGNÉTIQUE 18 - 19 Section 3 – RELÈVEMENT 19 - 2...

[Page 12] Brunton 8097

1 – ORIENTATION : Brunton Eclipse 8097 La boussole Eclipse 8097 est un instrument de visée qui permet de calculer un relèvement (direc- tion) en degrés par rapport au nord magnétique ou géographique. Cette section fournit une description des p...

[Page 13] Brunton 8097

Exemple: Si la déclinaison magnétique est 15º Est à votre position, le Nord magnétique est alors 15º à l’est du nord géographique. La figure 4 illustre le nord géographique et le Nord magnétique, tel qu’indiqués sur les légendes des c...

[Page 14] Brunton 8097

déterminer les relèvements sur carte : alignement sur carte, alignement de la boussole et rappor- teur d’angles. 6.1 Alignement sur carte Cette méthode est la plus précise. Alignez la carte vers le nord géographique puis déterminez le relèv...

[Page 15] Brunton 8097

7 – Triangulation Dans la présente section, vous devez calculer le relèvements de trois points de repère visibles et ensuite les tracer sur la carte. L’intersection des lignes de relèvements indique votre position approximative. Un point de r...

[Page 16] Brunton 8097

Échelle 1 : 24 000 [Scale: 1:24,000] Fuseau 11 [zone 11] Augmentation de l’abscisse [Easting Increases] Augmentation de l’ordonnée [Northing Increases] 2. Identifiez les amorces de quadrillage UTM et les étiquettes autour de la marge de la...

[Page 17] Brunton 8097

13 – Spécifications techniques de modèle Eclipse 8097 Magnétisme : Disque indicateur en NdFeB – en attente de brevet Exactitude : Relèvement – ± O 1 lecture précise (0,5 O appréciable) Dimension : Longueur – 11,8 cm (4,6 po)* Largeu...