Marco RT-300 Minus Cylinder Refractor (Pre-Owned)

Brand: Marco


The pre-owned Marco RT-300 Refractor has been refurbished to meet the highest quality standards in the industry.

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The pre-owned Marco RT-300 Refractor features sealed in rear with replaceable plano lens, fully synchronized cross cylinders, and a selection of auxiliary lenses. 

The RT-300’s accessory knob is positioned next to the cylinder power/axis knob and all controls are within a hand’s breadth of each other. Cylinder power up to +-6.00D; sphere power from +16.75 to -19.00D. “Sure-grip” knurls on the control knobs make them easy to grasp. Combined with the convenient placement of the controls themselves, this helps reduce fatigue. Fully synchronized cross-cylinder is standard. Large high-contrast numbers on the instrument scales make them easy to read even in subdued light.

All certified pre-owned (used) inventory from Lombart is completely refurbished, tested, and re-calibrated by factory-trained technicians. Please allow up to 4 weeks for delivery.

Product may differ from image based on availability. Please contact us for details. All pre-owned and demo products are subject to availability.


  • Sealed in rear with replaceable plano lens
  • Fully synchronized cross cylinders or optional split- image cross cylinders
  • Anti-reflective coating on lenses
  • Near tests. Bi-loupe turret system
  • Large, legible high contrast number scales
  • Selection of auxiliary lenses
  • Conveniently located knobs
  • Manual refractor