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How to Repair a Lensatic Compass

简介

After extensive use, a Model 3H Cammenga Lensatic Compass tends to give less accurate headings because burrs develop on the needle preventing the dial from rotating. This guide will help you fix this issue in order to maximize accuracy of the compass. Step 7 requires you to use a pocket knife and any sharp tool should be handled with caution.

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  1. How to Repair a Lensatic Compass, How to Repair a Lensatic Compass: 步骤 1 中的图像 1，3 How to Repair a Lensatic Compass, How to Repair a Lensatic Compass: 步骤 1 中的图像 2，3 How to Repair a Lensatic Compass, How to Repair a Lensatic Compass: 步骤 1 中的图像 3，3

    • Using a Phillips #1 screwdriver, remove the four screws in the bottom of the compass.

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  2. How to Repair a Lensatic Compass: 步骤 2 中的图像 1，3 How to Repair a Lensatic Compass: 步骤 2 中的图像 2，3 How to Repair a Lensatic Compass: 步骤 2 中的图像 3，3

    • Use the pocket knife or any flat edge to pop the bottom plate out of the compass.

    • Handle sharp edges with care.

    • Take out the dial break which should look like a small piece of plastic.

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  3. How to Repair a Lensatic Compass: 步骤 3 中的图像 1，3 How to Repair a Lensatic Compass: 步骤 3 中的图像 2，3 How to Repair a Lensatic Compass: 步骤 3 中的图像 3，3

    • Remove the inner compass.

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  4. How to Repair a Lensatic Compass: 步骤 4 中的图像 1，2 How to Repair a Lensatic Compass: 步骤 4 中的图像 2，2
    在这个步骤中使用的工具：
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    • Clean the inside of the outer compass with a microfiber towel.

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  5. How to Repair a Lensatic Compass: 步骤 5 中的图像 1，3 How to Repair a Lensatic Compass: 步骤 5 中的图像 2，3 How to Repair a Lensatic Compass: 步骤 5 中的图像 3，3

    • Carefully pop the inside lens off using both thumbs.

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  7. How to Repair a Lensatic Compass: 步骤 6 中的图像 1，2 How to Repair a Lensatic Compass: 步骤 6 中的图像 2，2

    • Take out the floating dial. Just flip the inner compass over.

    • Use a pencil and put some graphite on the inside of the center of the floating dial.

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  8. How to Repair a Lensatic Compass: 步骤 7 中的图像 1，2 How to Repair a Lensatic Compass: 步骤 7 中的图像 2，2

    • Use the edge of the pocket knife to sharpen the needle upwards.

    • Go around the needle and be sure not to push too hard as to create an even worse burr.

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  9. How to Repair a Lensatic Compass: 步骤 8 中的图像 1，2 How to Repair a Lensatic Compass: 步骤 8 中的图像 2，2

    • Put the floating dial back on the needle.

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  10. How to Repair a Lensatic Compass: 步骤 9 中的图像 1，3 How to Repair a Lensatic Compass: 步骤 9 中的图像 2，3 How to Repair a Lensatic Compass: 步骤 9 中的图像 3，3

    • Put the inner lens back on the inner compass.

    • Use your thumbs to pull the rubber flush against the inner lens.

    • Be sure to line up the black line of the inner lens with what would be the top of the outer compass.

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  11. How to Repair a Lensatic Compass: 步骤 10 中的图像 1，1

    • Using small circular motions clean the inner lens.

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  12. How to Repair a Lensatic Compass: 步骤 11 中的图像 1，3 How to Repair a Lensatic Compass: 步骤 11 中的图像 2，3 How to Repair a Lensatic Compass: 步骤 11 中的图像 3，3

    • Put the inner compass back inside the outer piece.

    • Make sure that the black line lines up with the top of the compass.

    • Put the dial break, the small plastic piece, back on.

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  13. How to Repair a Lensatic Compass: 步骤 12 中的图像 1，2 How to Repair a Lensatic Compass: 步骤 12 中的图像 2，2

    • Put the plate back on the compass

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  14. How to Repair a Lensatic Compass: 步骤 13 中的图像 1，3 How to Repair a Lensatic Compass: 步骤 13 中的图像 2，3 How to Repair a Lensatic Compass: 步骤 13 中的图像 3，3

    • Screw all the screws back in and you are finished.

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