Key features
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400× optical magnification (single-mode friendly)
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White LED coaxial illumination for clear defect contrast
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Built-in IR laser safety filter (attenuates 850/1310/1550 nm)
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Fine-focus control + momentary LED on/off
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Universal slip-grip adapter (interchangeable interfaces)
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Handheld, battery-powered
Specifications
| Item | Value |
|---|---|
| Magnification | 400× |
| Illumination | White LED, coaxial |
| LED lifetime | ~10,000 hours |
| Power | 3 × AAA batteries |
| Controls | On/Off LED switch, fine focus |
| Safety | Built-in laser attenuation filter |
| Size | 225 mm × 32 mm |
| Weight | ~0.6 kg |
| Adapter | Universal slip-grip |
What’s included
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FM-400 microscope body
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Universal slip-grip adapter
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Protective caps
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Carry pouch
(batteries not always included – check listing)
Usage notes
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For passive fibers only.
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Do NOT view active fibers. Safety filter is not a substitute for proper laser safety.
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Best suited for single-mode fiber inspection (400×).











