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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

C, S, and T-Mount Fine Thread Focus Tubes

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  • Finely Threaded Internal Barrel for Fine Focus Adjustments
  • Inner Diameter Baffle Thread for Stray Light Reduction
  • Knurled Lip on Female End for Controlled Adjustments

TECHSPEC® C, S, and T-Mount Fine Thread Focus Tubes are used for making precision adjustments to optical element positions within a system. These tubes feature an outer barrel with male C, S, or T-Mount thread at the base end and a finely threaded interior barrel to allow for fine focusing. The secondary barrel has a female S, C, or T-Mount thread, knurled ring at the front end for easy adjustment, and a threaded interior for light baffle. Set screws can be used to fix the extension position. TECHSPEC C, S, and T-Mount Fine Thread Focus Tubes offer different extension length options to meet specific application demands.

Note: Compatible Allen wrenches for C, S, and T-Mount Fine Thread Focus Tubes (#56-271, #55-452, and #58-637, respectively) sold separately.

Common Specifications

Function:
Extension Tube (Adjustable)

Products

 Thread Type   Extension Length (mm)   Compare   Stock Number   Price  Buy
C-Mount 30.0 - 50.0
T-Mount 35.0 - 60.0
T-Mount 40.0 - 65.0
C-Mount 20.0 - 30.0
C-Mount 50.0 - 90.0
S-Mount 17.5 - 25.0
S-Mount 13.5 - 17.0

Technical Information

Accessories

Title CompareStock Number  Price Buy
1.5mm Hex Key Size, Metric Allen Wrench #55-452 €6,50   Request Quote
  • 3-4 days
    ×
0.050" Hex Key Size, English Allen Wrench #56-271 €6,50   Request Quote
  • 3-4 days
    ×
1/16" Hex Key Size, English Allen Wrench #58-637 €6,50   Request Quote
  • 3-4 days
    ×

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