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It make up of box and needle, appliance of estimating distance, mileage framework,Pitching framework and coordinate ruler, can direct direction, measure distance,The angle of pitching, coordinate and draw map.Setup of measurement azimuth: Is make up of box and needle, azimuth casing, applianceAnd windows of present.Implement of estimating distance: Is make up of applianceAnd window of present and other thing. Measure precision is 5%.Framework of measure pitching: Is make up of pitching implement of present, swing ofPresent and other thing. Bound of measure is ±90°, unit is 5°. Presion is 2.5°.Framework of measure mileage: Is make up of wheel of mileage, needle of watch andSystem of gear and other thing. Unit: Kilometer, preision is 2%.Coordinate ruler: Is make up of two ruler which is upright with each other.The lengther:80mm, the shorter:20 mm, unit:1mmPrecision:0.5mmProduct dimension:80x60x27mmInner compass diameter:50mmOuter compass diameter:48mmNeckstrap length:515mmBox dimension:93x70x35mmN. W:115gG. W:210g
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336x280 banner
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