Tissot POCKET TOUCH User Manual - Page 11

T-TOUCH II * GLOSSARY > COMPASS Compass In compass mode, your T-TOUCH indicates the True North Pole, factoring in magnetic declination. Compass explanations The vertical lines (meridians) on the Earth converge at the True North Pole (Ng), indicating its direction. The hand of a conventional compass indicates the direction of the Magnetic North Pole (Nm). The angle (α) between these two directions Ng and Nm is known as magnetic declination. The magnetic declination value depends on your location on Earth. Furthermore, the Magnetic North Pole is constantly moving. So the magnetic declination value also depends on the date. If the correct magnetic declination value (for the location and date) is set (see the setting procedure on page 10), the minutes hand of your T-TOUCH will point to True North (Ng). If the magnetic declination is set to 0, your T-TOUCH will point to Magnetic north (Nm). The magnetic declination values and dates are indicated on topographic charts, or can be found using special software available on the Internet. For Switzerland: http://www-geol.unine.ch/geomagnetisme/Representation.htm For the whole world: http://www.ngdc.noaa.gov/seg/geomag/magfield.shtml Azimuth explanations The azimuth is the horizontal angle between the direction of an object and True North. The azimuth is measured from north in degrees from 0° to 359° (e.g.: East = 90°). This an- Heading gle is shown in the display. 12 o'clock represents the head- Heading ing given by the azimuth relative to True North. Note 1 Azimuth 315o Azimuth 315o For a correct indication of North, it is extremely important to hold the watch as level as possible. Note 2 The compass function, like any other compass, should not be used near a metal or magnetic mass. In case of doubt, you can recalibrate your compass. Note 3 The rotating bezel, graduated from 0° to 359°, provides another method for determining the azimuth. Characteristics of function Accuracy: ± 8° Resolution: 2° ALARM The 2 alarms are associated with time T. An alarm lasts 30 seconds, without repeating. When the programmed time is reached, you can stop the alarm by pressing one of the push-buttons. Stop alarm or 1 sec. or Activate glass Alarm 1 display SETTING > ALARM 1 sec. Alarm 2 display 2 sec. Alarm rings or Stop alarm or Alarm 1 or 2 display Activate or deactivate alarm Setting mode www.tissot.ch 11/12 : time forward : time backward Validate setting 146_EN