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How to attach the protective screen to the frame.
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How to perform the preliminary adjustment of the loupes.
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How to perform the fine adjustment of the loupes.
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How to attach the rims for corrective lenses to the frame.
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How to adjust the interpupillary distance of the rims for corrective lenses .
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How to attach the headlight to the protective screen.
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How to exchange the loupes.
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