Employs the special bearing system to indicate exact orientation even if tilted

With adoption of the unique bearing system, it is the world’s only diving compass indicates the exact orientation even if tilted. In general, with the normal oil-filled one-point support compass, it needs to keep the horizontal at the time of use as the rotating disc comes into contact with the case and stopped when it is tilted. With adoption of the two-point support system and performing careful special balancing of the rotating disc, the ac-40 indicates the correct orientation without maintaining a horizontal of the compass, and it allows extremely easy to use operation and accurate compass navigation.

The encapsulation of an optimized oil for compass

Inside, encapsulate the less volatile oils in viscosity to optimize the rotational speed of the compass, thus, it has improved the accuracy of use and navigation under pressure. In addition, the oil is carefully selected by extensive verifications even for operation at low temperature, under which the rotation tends to be dull due to the oil viscosity increases. So you can use it safely even in ice diving.

Heat-resistant engineering plastic employed

The compass body made of heat resistant engineering plastic, the hear resisting property is 1.5 time of conventional, which has significantly reduced failure rates such as deformation under scorching sun. Also ,with the excellent gas permeability it effectively prevents the generation of bubbles.

Tension automatic adjustment belt

The specially made list belt with a built-in spring adjustment mechanism in the buckle is supplied as standard accessories. It will prevent the phenomenon in which the fitting of the depth meter becomes loose as the result of diving suit shrink at wrist due to the water depth increase.

Luminous scale plate glows for hours

The scale plates of the compass is painted with Japanese-made special phosphorescent agent, which will glow stably for hours once exposed to the light. It is ideal for night diving.