- Angle is adjustable to catch the target easily.
- Stable polarity is obtained thanks to the base line represented by a long groove.
- Compass diaphragm design which alleviates thermal deformation of diaphragm. (Utility model registration No. 2593571)
- Adjuster with a revolving axis to 90 ° allows you to adjust the compass angle for easily reading, gives you wide view and reduces stress underwater