User manual CITIZEN WATCH 3111

[. . . ] 13 13 Crown Date hand 14 *The sub-watch is synchronous with the main watch. *The day hand indicates the date of the main watch. 2 3 15 15 16 16 17 17 18 18 19 19 20 21 20 21 22 22 23 23 24 24 2 5 2 5 14 3. Adjusting the main watch (1) When the second hand is at 0 second, pull the crown out to the position where you can adjust the time. (2) Turn the crown to adjust the main watch. [. . . ] 3) Flight diatance Example: Obtain the air distance when the air speed is 210 knots and the flight time is 40 minutes. Align "21" on the outer scale with the SPEED INDEX (L) on the inner scale. then, "40" on the inner scale corresponds to "14" on the outer scale. Thus, the air distance of the flight is 140 nautical miles. 4) Rate of fuel consumption Example: Obtain the rate of fuel consumption (gallons / hour) when the flight time is 30 minutes and the fuel consumption is 120 gallons. Align "12" on the outer scale with "30" on the inner scale. Then, the SPEED INDEX (L) on the inner scale corresponds to "24" on the outer scale. Thus, the fuel consumption is 240 gallons per hour. 5) Fuel consumption Example: Obtain the fuel consumption required for a flight when the vate of fuel consumption is 250 gallons per hour and the flight time is 6 hours. 11 40 10 35 35 11 12 30 12 13 1 4 15 15 16 16 17 17 18 18 19 19 20 21 20 21 22 22 23 23 24 24 2 5 1 4 2 5 Align "25" on the outer scale with the SPEED INDEX (L) on the inner scale. Then, "6:00" on the inner scale (time scale) corresponds to "15" on the outer scale. Thus, the fuel consumption is 1, 500 gallons. 6) Estimated flight time Example: Obtain the estimated flight time when the vate of fuel consumption is 220 gallons per hour and the aircraft has 550 gallons of fuel. Align "22" on the outer scale with the SPEED INDEX (L) on the inner scale. Then, "55" on the outer scale corresponds to "2:30" on the inner scale (time scale), Thus, the estimated flight time is 2 hours and 30 minutes. 7) Difference in altitude The difference in altitude can be obtained from the rate of descent and the descent time. Example: Obtain the difference in altitude when an aircraft continues descending for 23 minutes at a rate of 250 feet per minute. Align "25" on the outer scale with "10" on the inner scale. Then, "23" on the inner scale corresponds to "57. 5" on the outer scale. Thus, the difference in altitude is 5, 750 feet. 12 Answer. 8) Rate of climb (or descent) The rate of climb (or descent) can be obtained from the time required to reach an altitude. Example: Obtain the rate of climb when an aircraft reaches an altitude of 7, 500 feet after climbing for 16 minutes. Align "75" on the outer scale with "16" on the inner scale. Then, "10" on the inner scale correspons to "47" on the outer scale. [. . . ] · Do NOT place the watch close to a magnet. Timekeeping will become inaccurate if you place the watch close to magnetic health equipment such as a magnetic necklace or a magnetic latch of a refrigerator door or handbag clasp or the earphone of a mobile phone. If this has occurred, move the watch away from the magnet and reset the time. · Do NOT place the watch close to household appliances that generate static electricity. [. . . ]