Silva Terra Expedition S Compass - Mirror Sighting

Choose a brighter future with the more sustainable Terra Expedition S - made from hemp and recycle...

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Mountain WarehouseTerra Expedition S Baseplate Compass with Lanyard -
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Mountain Warehouse - UKTerra Expedition S Baseplate Compass with Lanyard -
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Product Information

Full details

The Silva Terra Expedition S Compass is designed for experienced users and professionals navigating challenging outdoor environments. Its key benefit is highly accurate, precision bearing taking over long distances, thanks to its mirror-sighting functionality. A potential caveat is its complexity, making it best suited for those familiar with advanced compass use. Made from sustainable materials, this compass offers durability, a wide range of map-measuring scales, and features like a clinometer and magnetic declination adjuster.

All features

Model Part NumberM36AA6800001
BrandSilva

Extended Product Information

FAQs

What is mirror sighting and why is it important?

Mirror sighting involves using a mirror integrated into the compass housing to view both the compass dial and your target simultaneously. This allows for highly accurate bearing readings, especially over long distances in open terrain, as you can align your target and read the bearing without moving the compass from your line of sight.

What does 'Silva Terra' mean for this product?

Silva Terra indicates that this product has a lower environmental footprint. It's made from sustainable materials like recycled plastics and hemp, and its production results in 90% less carbon emissions compared to conventional products. It aligns with Silva's commitment to reuse, reduce, and recycle.

How do I adjust the magnetic declination?

The compass has a built-in adjuster for magnetic declination. You will need to determine the local declination value for your area from a map or reliable source, then use the compass's adjustment mechanism to set this offset. Refer to the user manual for specific instructions on your model.

Can I use this compass for night navigation?

Yes, the Silva Terra Expedition S features luminous markings that enable basic navigation and orientation in low-light or dark conditions after being exposed to light.

What is the warranty period for this compass?

The Silva Terra Expedition S Compass comes with a 5-year warranty.

How do I clean the compass?

Clean the compass with a soft, damp cloth. Avoid using harsh chemicals or abrasive materials that could damage the housing or lens. Dry it thoroughly afterwards.

What map scales are supported by the distance lanyard?

The detachable distance lanyard is equipped with scales for 1:25,000 and 1:50,000 maps, allowing you to measure distances directly on these map types.

Troubleshooting

Compass needle not pointing North accurately.

Ensure the compass is held flat and away from metal objects or electronic devices that can cause magnetic interference. Check if the magnetic declination has been set correctly for your region.

Mirror is smudged or difficult to see through.

Clean the mirror gently with a soft, lint-free cloth (like a microfiber cloth). Avoid touching the mirror surface with your fingers.

Map scale lanyard is difficult to read or use.

Ensure the lanyard is flat against the map. The scales are designed for precise measurement; double-check alignment with map grid lines.

Luminous markings have lost their glow.

Expose the compass to a light source (sunlight or flashlight) for a few minutes to recharge the luminous markings.

Pros and Cons

Pros

  • Highly accurate for taking bearings over long distances due to mirror sighting.
  • Constructed with sustainable materials, reducing environmental impact.
  • Versatile map-measuring scales cater to various map types and scales.
  • Durable build designed to withstand tough conditions.
  • Includes advanced features like a clinometer and magnetic declination adjuster.

Cons

  • May be overly complex for novice users.
  • Mirror sighting requires practice for optimal accuracy.
  • Smaller scale lanyard might be less convenient for very long distances compared to dedicated tools.

Setup, Compatibility & Care

Setup: The compass is ready for use out of the box. The primary setup involves adjusting the magnetic declination if required for your specific region. Consult the compass markings and a local topographical map to determine the correct declination offset, then use the built-in adjuster. The safety-release lanyard can be attached to your pack or wrist.

Compatibility: This compass is compatible with most topographic maps featuring standard scales (1:25,000, 1:50,000). The included lanyard is designed for use with maps using 1:25,000 and 1:50,000 scales. It works in conjunction with the SILVA 1-2-3 System® for map navigation.

Care:

  • Clean the compass lens and housing with a soft, damp cloth. Avoid abrasive cleaners.
  • Keep the compass away from extreme heat and direct sunlight for prolonged periods.
  • Store in a dry place. While waterproof (IP classification), prolonged submersion is not recommended.
  • Ensure the mirror is clean for optimal sighting. Use a microfiber cloth for best results.

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