Tissot 141_EN6/14, 141_EN5/14 manual Glossary Compass, Azimuth explanations, Compass explanations

T-TOUCH EXPERT

SETTING > COMPASS > COMPASS CALIBRATION

2 sec.

Compass	Activate calibration mode
Calibration display	– glass deactivated
	during calibration

*

Turn the watch more than a complete revolution on a horizontal surface (e.g. a table) in an environment free from magnetic interference, at a rotation speed of around 30° per second.

Total time: 20 seconds maximum

a)Calibration successful – data stored

b)Calibration failed

– repeat calibration

Back to compass display

GLOSSARY > COMPASS

Compass

In compass mode, your T-TOUCH indicates the True North Pole, factoring in magnetic

Azimuth explanations

In azimuth mode, you T-TOUCH indicates the azimuth (heading) that you need to turn to.

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

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°).

In azimuth mode, the T-TOUCH emits a beep and visual signal when the 6-12 o’clock axis of the watch is aligned with the heading set.

12 o'clock represents the heading

given by the azimuth relative to True North.

Note 1

Heading

Azimuth

315o

Heading

Azimuth

315o

declination value also depends on the date. If the correct magnetic declination value (for the loca-

tion and date) is set (see the setting procedure on page 11), 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

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°

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