Astronomical Telescope Accessories, SV181 1.25'' Rack Pinion Newtonian Reflector Focuser for 114mm and 150mm Newtonian Reflector Telescope.,for Replacing Telescope Accessories

Product dimension1.25in interfaceInternal brass designA brass compression ring to prevent the marring of your telescope accessories;Internal brass ring that the set screw hits to hold your 1.25" eyepiece inside for eliminates marks on your eyepiece barrelThe gear can be fine tuningLarge and convenient knobYou can also use it with glovesLocking thumb screwsWith an aluminum locking thumb screws to secure adjusted focus make sure it won't come looseMatting threadGlare-threaded and flat-black interior ensures excellent contrastAll metal construction and anodizing aluminum process; durable for long time useRack and Pinion Focuser for Newtonian Reflector TelescopeNotice:SV181 Rack and Pinion Focuser is suitable for 114mm and 150mm Newtonian reflector telescope.==========High-concerned chemical : NoneType : Monocular

• Universal mounting base allows direct replacement of original focusers without tube modification. Includes screws and wrench for easy installation.
• Model SV181 adopts 1.25'' rack and pinion focusing structure, suitable for Newtonian reflector astronomical telescopes.
• Rack and pinion transmission runs smoothly to meet the needs of focal length adjustment and positioning during astronomical observation.
• Compatible with 114mm aperture Newtonian reflector telescopes to meet the focusing assembly requirements of corresponding equipment.
• Compatible with 150mm aperture Newtonian reflector telescopes to expand the applicable equipment range of the accessory.
• As a special focusing accessory for Newtonian reflector telescopes, its structure conforms to equipment installation standards and is easy to assemble.
• Precision rack-and-pinion drive mechanism, smooth focus travel with no backlash, supporting both fine and coarse focusing modes for precise focus needs in visual observation and astrophotography.