National Geographic NG770A Instruction Manual

Summary of NG770A

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    Watch collection ng770a / ng771a / ng771c instruction manual.

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    Hour hand control turning bezel crown minute hand calendar 2 time setting position solar panel compass speed index outer scale inner scale setting the time 1) pull the crown out to the time-setting position (2). 2) turn the crown to set the hour and minute hands to the desired time. 3) push the crow...

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    Using slide rule this rule is good for… multiplication division proportion square root time required fuel consumption estimated flight time other flying problems note: use the control turning bezel located above the crown to move the outer scale. This scale cannot place a decimal point; therefore, t...

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    (3) flight distance example: obtain the air distance when the air speed is 180 knots and the flight time is 40 minutes. Operation: align "18" on the outer scale with the speed index on the inner scale. Then "40" on the inner scale corresponds to "12" on the outer scale. Thus, the air distance of the...

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    (6) estimated flight time example: obtain the estimated flight time when the fuel consumption is 260 gallons an hour and the aircraft has 650 gallons of fuel. Operation: align "26" on the outer scale with the speed index on the inner scale. Then, "65" on the outer scale corresponds to "150" on the i...

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    (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 25 minutes. Operation: align "75" on the outer scale with "25" on the inn...

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    (11) multiplication example: 39 x 20 operation: align "39" on the outer scale with "10" on the inner scale. Then, "20" on the inner scale corresponds to "78" on the outer scale. Take into account the position of the decimal point and add one zero to obtain 780. Note that with the watch scales, the p...

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    (14) square root example: square root of 900 operation: turn the outer scale slowly and find a value that corresponds to both 90 on the inner scale and 10 on the outer scale. In this example, "90" on the inner scale corresponds to "30" on the outer scale and "10" on the outer scale corresponds to "3...

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    Technical data movement solar quartz 10 ½" solar cell type amorphous silicon solar cell secondary battery type titanium lithium ion secondary battery size 9.5 mm x 2.1 mm working time approx. 6 months (after fully charged) charging time approx. 3 hours (under 100 klx sunlight) approx. 120 hours (und...

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