Brunton Model 94 Advanced Lensatic Compass User Manual

1. Introduction

The Brunton Model 94 Advanced Lensatic Compass is a precision instrument designed for reliable navigation in demanding outdoor and military environments. Constructed with a rugged die-cast aluminum body and featuring phosphorescent markings, it provides accurate and stable readings for various applications.

Figure 1: Brunton Model 94 Compass in its packaging.

2. Key Features

• Premium Construction: Rugged die-cast aluminum body with powder coating and a glass lens for superior optical quality and scratch resistance.
• Military-Grade Design: Features 7 phosphorescent vials that glow after light exposure, with a unique vial color for north arrow illumination, ensuring visibility in low-light conditions.
• Precise Navigation: Rare earth needle settles within 3 seconds, offering exceptionally fast and stable readings with a sapphire bearing system.
• Dual Measurement: Compass disc displays 0-6400 mils and 0-360° azimuth graduations, providing versatility for different navigational needs.
• Versatile Carry: Included case fits 2-inch belts and is compatible with ALICE clip and MOLLE systems, weighing just 6.90 oz with the case.
• Made in the USA: Manufactured in Riverton, Wyoming, ensuring quality craftsmanship.
• Durable Needle: The compass needle is designed not to demagnetize, maintaining long-term accuracy.

3. Components Overview

Familiarize yourself with the main parts of your Brunton Model 94 compass:

1. Cover: Protects the compass dial and features a sighting wire.
2. Sighting Wire: Used for precise alignment with distant objects.
3. Thumb Loop: Provides a secure grip during sighting.
4. Compass Dial: Displays magnetic north, azimuth graduations (0-360°), and mils (0-6400).
5. Luminous Markings: Phosphorescent points for night navigation.
6. Lensatic Sight: Magnifies the compass dial for accurate reading of bearings.
7. Bezel Ring: Rotatable ring with click stops for setting bearings.
8. Base Plate: Houses the compass and provides a stable platform.

Figure 2: Detailed view of the compass dial and markings.

Figure 3: Phosphorescent markings illuminated in low light.

4. Setup

Your Brunton Model 94 compass comes ready for immediate use. No assembly is required. It is recommended to familiarize yourself with its components and basic functions before heading into the field.

4.1 Attaching the Carrying Case

The included carrying case protects your compass and allows for convenient transport. The case features a belt loop for attachment to a 2-inch belt, and is compatible with ALICE clip and MOLLE systems.

1. Open the flap of the carrying case.
2. Slide the compass into the case, ensuring the cover is closed.
3. Secure the flap with the snap closure.
4. To attach to a belt, slide your belt through the loop on the back of the case.

Figure 4: Compass secured in its carrying case.

5. Operating Instructions

5.1 Taking a Bearing (Sighting Method)

This method allows for precise determination of the direction to a distant object.

1. Hold the compass level and steady at eye level.
2. Open the cover fully so the sighting wire is vertical.
3. Fold the lensatic sight to a 45-degree angle.
4. Look through the lensatic sight and align the sighting wire with your target object.
5. While maintaining alignment, read the bearing from the compass dial through the lensatic sight. The rare earth needle will settle quickly for a stable reading.
6. Rotate the bezel ring until the luminous line on the bezel aligns with the north arrow of the compass needle. This sets your desired bearing.

Figure 5: Proper technique for sighting with the compass.

5.2 Orienting a Map

To align your map with true north using the compass:

1. Place the compass on your map.
2. Rotate the map and compass together until the north arrow of the compass needle aligns with the north direction indicated on your map (usually the top of the map).
3. Adjust for magnetic declination if necessary. While the Model 94 does not have an adjustable declination scale, you can apply the correction mentally or by rotating the map.

Figure 6: Using the compass to orient a map.

6. Care and Maintenance

• Cleaning: Wipe the compass body and glass lens with a soft, damp cloth. Avoid abrasive cleaners or solvents.
• Storage: Store the compass in its protective carrying case when not in use. Keep it away from strong magnetic fields (e.g., magnets, electronic devices, car speakers) to prevent demagnetization.
• Phosphorescent Markings: To activate the glow, expose the compass to a light source for a few minutes.
• Inspection: Periodically check for any signs of damage to the casing or lens.

7. Troubleshooting

7.1 Needle Not Settling or Sluggish

• Cause: Proximity to magnetic interference.
• Solution: Move away from any metal objects, electronic devices, or other sources of magnetic fields.
• Cause: Extreme temperatures.
• Solution: Allow the compass to acclimate to ambient temperature.

7.2 Difficulty Reading Dial in Low Light

• Cause: Insufficient activation of phosphorescent markings.
• Solution: Expose the compass to a bright light source (sunlight, flashlight) for several minutes to charge the phosphorescent vials.

8. Specifications

9. Warranty & Support

9.1 Warranty Information

The Brunton Model 94 Advanced Lensatic Compass is covered by the Standard Manufacturer's Warranty. Please refer to the official Brunton website or contact customer service for detailed warranty terms and conditions.

9.2 Customer Support

For further assistance, technical support, or inquiries regarding your Brunton Model 94 compass, please contact Brunton International LLC directly. Contact information can typically be found on the official Brunton website or product packaging.