The OSS 40B Baseplate Compass from Brunton is a lightweight and durable baseplate-style compass for day hikes and brief excursions off the trail. This cost-effective navigation device features Brunton's proprietary alignment system and includes tool-free declination adjustments, one degree resolution, and meridian lines for more reliable headings. An extra thick baseplate and precise map/roamer scale markings equip the 40B with the rugged build quality and functionality you need from an everyday compass. Brunton Outdoor Group has been designing and manufacturing compasses since their establishment in 1894; whether you are a bird watcher, hunter, or hiker, Brunton has been making gear for nature enthusiasts like you for over a century.
Function and Handling
- OSS Alignment System with integrated map magnifier
- Tool free declination adjustment with on map meridian lines
- Map scales: 1:24k, 1:25k, 1:50k, UTM
- Roamer scales: 1:24k, 1:25k, 1:50k
- Inch and millimeter scales
- Reversible slide scale
- 100m confident circles
- Mineral oil filled housing
- 1° resolution accuracy
- Included lanyard