The OP-03 hand-bearing compass with high accuracy and usability when taking direction.
- Build-in an opisometer for measuring the lengths of arbitrary curved lines
- Graduation interval 1° with accuracy ±1°
- Scale: Azimuth 360°, Reversed 360°
- Liquid filled capsule for stable operation
- Optical reading of card for higher accuracy
- Lightweight cast-aluminum housing, impact-resistant for durable use