Brass Marine Compass in Wooden Box
Brass Marine Compass in Wooden Box is a kind of automatic liquid-filled compass. This compass is made of brass which is anti-magnetic and resistant to corrosion and abrasion. Additionally it is designed and manufactured under exacting standards, so the quality is guaranteed. Four dial diameters are available: 75mm, 100mm, 130mm, 150mm. You can choose according to your requirements.
Overview
Certificate: CCS approval.
Major functions
With new automatic fluid-filling and bubble-removing functions, the operations of bubble-removing and fluid filling is simple.
With deviation correctional device, adjustment is simple.
Clarity on compass card, stability on direction, high sensitivity, strong endurance.
With lighting device, suitable for night navigation.
Employing internationally most-advanced permanent magnetic materials, stable functions and long usage life.
Major specifications
Compass card diameter (mm): 75, 100, 130, 150
Compass card divisions: divided evenly by no more than 2°
Directional deviation: no more than 0.5°
Swing half period: no less than 8.8 seconds (at 20±30℃ H=34µΤ)
Time to stability: no more than 41 seconds (at 20±30℃ H=34µΤ)
Frictional deviation: no more than 0.088° (at 20±30℃ H=34µΤ)
Vortex deviation: no more than 1.05°(at 20±30℃ H=34µΤ)
Major half circle deviation adjustment: 1—40°
Quadrant deviation adjustment:1—6°
Inclination deviation adjustment: -50mv—+50mv
Ambient temperature: -30℃—+60℃
Photo of brass marine compass in wooden box
