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Focuser, High Strength Astronomical Telescope Accessory Double Helical Focuser  For Finder And Guidescope For Telescope Lenses

<ul><li>Made of quality aluminium alloy material, high strength, , sturdy and durable.</li><li>Lightweight and compact size, easy to carry and use.</li><li>High double helical focuser for guider scope/finder scope Interface.</li><li>The solution for telescopes or telephoto lenses with sluggish focusing.</li><li>Wonderful accessory for astronomical telescope.</li></ul>

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Specification: Item type: Double Helical FocuserCondition: brand newMaterial: aluminium alloyWeight: Approx. 120gColor: As picture shownFocusing Stroke: Approx. 10mm/0.4inAccuracy of focusing: Approx. 0.05mm Interface: 1.25inches, inner M42x0.75mm thread1.25'' helical focuser, 10mm focusing stroke, lightweight. In the process of focusing, the inserted eyepiece or zenith, etc. keeps no rotation and only makes linear motion, which is conducive to observation and shooting. Package List: 1 x Helical Focuser

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