Protractor diameter:
42 mm
Primary direction scale:
On top of rotating protractor alligned with outer edge, DEGREES scale 0-360° clockwise with 2° resolution and a number every 20°. Diameter: 40 mm.
Cardinal markings:
N on protractor
Magnetic balancing:
Global needle, The needle is independent of the magnetic inclination and functions at all earth magnetic field locations.
Needle design:
Red for north and black for south. The needle has a larger luminescent area in the north end and a small in the south end. The north end of the needle has two parallel red lines next to it to enable more precise alignment with the orienting arrow. The markings of the needle are the same on both the upper and the lower side. The needle is slightly tilted to give room for thermal contraction in cold. The center of the needle is transparent and the damping shape of the needle is also transparent. The hub of the needle features a NdFeB ring shaped magnet.
Needle length:
32 mm
Needle movement damping method:
Non-freezing transparent liquid filled compass capsule with the absence of bubbles in the operating temperature range at sea level.
Compass capsule:
Hermetically sealed transparent PMMA capsule, diameter 33 mm.
Orienting arrow:
Two white lines to allign with the north end of the needle. Two white dots on each side of the orienting arrow at + and - 60 degrees used to navigate around large obstacles.
Declination corection:
The angle between orienting arrow and orieting lines can be adjusted to compensate for declination. The angle is adjusted by turning a sprocket using a flat screw driver delivered on the lanyard. The declination correction scale is in degrees with a two degrees resolution and is marked with a number every 20˚. The declination correction scale is full 360˚.
Protractor index:
A luminescent arrow shape next to the protractor.
