Silva Expedition S Compass
- Mils and degrees graduation, 6400/360
- 1:50k, 1:25k, 1:24k map scales, plus 1:40,000 measuring
- Clinometer with slope card for avalanche risk
- Mirror sighting with 45-degree angle assistance
- 86 g weight, waterproof and shakeproof
- Luminous markings and magnifying lens
- 4.25 x 2.5 inches item size
- Scale lanyard with 2 soft scales
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A full-featured baseplate compass for navigators who work in mils or degrees and check slope angle in avalanche terrain. Its many scales take practice, so casual hikers may use little of it.
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ASIN: B01FU70YNACategory: Compasses
Overview
Backcountry routes, avalanche terrain and military map work are where the Silva Expedition S compass belongs. A baseplate with mirror sighting, a clinometer and silicone rubber feet supports precise bearings and slope readings, with luminous markings for night use.
Dual mils and degrees graduation plus a clinometer make it a serious tool for navigators who plot on topo maps and read slope angles in the field. The extra scales and settings take practice, so a casual hiker may find it more than they need.
Who it's for
Ski tourers, mountaineers and military-style navigators who plot bearings and check slope angles on the map. Someone who just wants north on a day hike will use little of its feature set.
Pros and cons
- Graduated in both mils and degrees
- Clinometer for slope angle checks
- Mirror sighting for accurate bearings
- Rubber feet grip the map
- Declination adjustment not listed
- Steep learning curve for beginners
- Scales match specific map series only
Performance notes
Bearing accuracy comes from the mirror sight, which lets you hold the compass at eye level and line up a distant landmark with the needle in one view. Rubber feet stop the baseplate from sliding during map work, and the clinometer gives a slope angle reading to set against the slope card.
Specifications
| Brand | Silva |
|---|---|
| Dimensions & fit | |
| Item weight | 0.19 pounds |
| Item Dimensions L x W | 4.2 × 2.5 inches |
| Construction & materials | |
| Material Type | Acrylic |
| Included components | |
| Included Components | Compass, Scale Lanyard With 2 Scales |
| Other details | |
| Item Type Name | Baseplate compass with mirror sight |
| Map Scale | 1:50k, 1:25k, 1:24k |
| Graduation | Mils and degrees (6400/360) |
| Housing | Dryflex |
| Map measuring scale | 1:40,000 |
| Measuring units | MM or inches |
| Water resistance level | Waterproof, shakeproof |
Frequently asked questions
Is the Silva Expedition S a GPS device?
No. It is a baseplate compass. Its measuring scales help plot positions given by a GPS, but no electronics are listed.
Can the Silva Expedition S help with avalanche safety?
It has a clinometer and a slope card for measuring slope angle and judging avalanche risk. It does not replace avalanche training or a forecast.
Does the Silva Expedition S have declination adjustment?
The listing does not mention a declination adjustment. Check Silva's product sheet if you need one.
Who is the Silva Expedition S designed for?
Silva describes it as a full-size baseplate compass for experienced navigators, used by NATO forces and mainly by infantry.