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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More
ID Fine Focus Tubes

Fine Focus Tube ID05, #35-783
Fine Focus Tube ID1, #35-762

Fine Focus Tube ID05, #35-783

Fine Focus Tube ID1, #35-762


  • Ideal for Variable Spacing Along the Optical Axis
  • Anti-Reflection Processing for Reduced Stray Light
  • Built-in Set Screw

The TECHSPEC® ID (Inner Diameter) Fine Focus Tubes provide smooth and precise spacing adjustment in a lens tube system. The assembly is constructed of anodized aluminum for easy integration. TECHSPEC ID Fine Focus Tubes are ideal for use with TECHSPEC ID Lens Tubes to provide changes to system length. These fine focus tubes utilize common 1.035” x 40 TPI and 0.535” x 40 TPI thread types for integration into most optic systems.

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