Coarse Focus Knob Difficult to Turn

Products Affected

T-1900C Series Comprehensive Scopes


If the coarse focus knob on your T-1900C series Comprehensive Scope becomes difficult to turn or rubs against the arm of the microscope, follow the instructions linked below to repair the over tightened focus knobs. If you prefer to contact our repair department for a warranty/repair estimate.

  • Click here for repair instructions
  • Contact our Repair Department by calling 1-800-501-7366 or email [email protected]

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