Brunton? Com/Pro 90
Developed using composite materials for the body, the ComPro is a lighter, more affordable alternative for transit users. It incorporates a cast NdFeB, rare-earth magnet, precisely balanced on a sapphire bearing. The result is a powerful magnet, which seeks magnetic north very quickly and allows for faster readings.
Features
Single NdFeB magnet resists demagnetization better than other types of magnets for increased reliability
Azimuth accuracy +/- 1/2? with 1? graduations
Vertical accuracy +/- 1/2? with 1? graduations and 10 minute readability
Vertical angle measurements to +/- 90? or 100% grade
A percent grade scale with increments of 5%
Induction damped needle for quick, accurate readings
Sapphire jewel bearing allows for smooth needle movement
Magnetic declination adjustment allows for east or west declination setting to 180?
Short and long sights for increased accuracy when sighting azimuth or vertical angles
Precision aligned mirror with convenient "see through" sighting capability
Composite body material is permanently impregnated with color
O-rings make the Com-Pro waterproof for increased reliability