| 摘要 |
PURPOSE: A nautical apparatus is provided to achieve coordination and gradient of a vehicle or a ship by using a gravity needle and an auxiliary needle. CONSTITUTION: Oil(11) used in a compass is filled in a globe(1) in such a manner that a half of the globe(1) is filled with oil(11). A floating device(8) formed with the north-pole and the south-pole is floated on oil(11). An auxiliary needle(7) is vertically installed on the floating device(8) and a gravity needle(10) is suspended to a lower portion of the floating device(8) such that a user reads a gradient from a vertical line(2) and a horizontal line(3). The globe(1) is fabricated by using transparent acryl or glass so that the user views an internal portion of the globe(1). The front portion of the gravity needle(10) is slightly convex so that the gravity needle(10) has weight higher than weight of the auxiliary needle(7).
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