Tissot POCKET TOUCH User Manual - Page 9

T-TOUCH II * GLOSSARY > ALTIMETER 1:9 Description of function In altimeter mode, your T-TOUCH becomes a baro- metric altimeter, displaying the altitude relative to mean sea level. 2000m 1500m Explanations 1000m 500m This is a barometric instrument, which calculates 0m P=pression the altituAdetteanstioan!function of absolute pressure (atmospheric). As the altitude rises, pressure drops, and vice versa. So the altimeter measures the difference between absolute pressure (atmos- pheric) and relative pressure (relative to sea level) to display the altitude. Your T-TOUCH is temperature compensated, and you can adjust your geographic location (hemisphere and climate zone). The altitude displayed is therefore cor- rected auto54m0 matically. 540 m NB! Due to the use of pressure to calculate altitude, the altimeter is780m sensitive to variations in atmospheric pressure in weather change54s0m. It is not uncommon to observe altitude differences of 100 m in a54n0might. So the value displayed may vary without the altitude having actually changed. 4473 m 4473 m 4473 m Note 1: "Presetting" an altimeter means setting the actual altitude of a known point (see presetting procedure on page 8). The actual altitude values are indicated on various media: signposts, contour lines and spot heights on maps. The altitude "presetting" is in line with relative atmospheric pressure. Note 2: In an airliner, since the cabin is pressurised, your altimeter will not indicate an accurate altitude. Note 3: To optimise the accuracy of your altimeter, you are advised to select the climate zone, see page 6. Characteristics of function Measurement range Altimeter resolution Unit conversion - 400 m to +9000 m 1 m 1 metre [m] = 3.281 feet [ft] - 1333 ft to +30,000 ft 3 ft 1 foot [ft] = 0.305 metres [m] 4000M 4478M 5000M Weather change = pressure variation = displayed altitude change 27.12.07 27.12.07 CHRONO Resolution: 1/100 sec / Measurement range: 99 hrs 59'59'' and 99/100 sec 0.00.0000 0.00.0000 27.12.07 0.00.0000 Activate glass Split (partial time) Chrono display Start chrono Stop chrono 0.01.16 34 0.01.1 6 34 Reset 0.01.2052 0.01.2052 0.01.3688 0.01.3688 Start chrono a) Flashing stop with partial time displayed, and chrono running in background b) Restart the chrono counting the elapsed time 0.00.0000 0.00.0000 Stop chrono Reset chrono www.tissot.ch 9/12 146_EN 13h4657