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Rectangular clear welding lens with 3.00 magnification marking

Walter Surface Technologies

Walter Surface Technologies UML-300 Universal Diopter Magnifying Lens 3.00

SKU CH-0M9T-SMCRX

Universal diopter magnifying lens replaces a 2x4" rear cover plate and fits vertical or horizontal mounts on 5x4" or 4x5" welding helmets with 3.00 magnification

  • Product typeWelding Protection
  • Replaces standard 2x4" cover plates for easy helmet upgrades
  • Fits both vertical and horizontal mounts on 5x4" or 4x5" helmets
  • Offers 3.00 diopter magnification for detailed close-up work
  • Multiple strength options from 1.00 to 3.00 suit varying vision needs
  • Universal design works across different helmet brands without modification

Universal Diopter Magnifying Lens 3.00

The Walter Surface Technologies UML-300 is a replacement magnifying lens designed for welding helmets. It fits 5x4 inch or 4x5 inch rear cover plates in both vertical and horizontal mounting orientations. The lens provides a fixed 3.00 diopter magnification strength for detailed weld inspection.

Welders needing 3.00 magnification

This lens suits welders who require the highest available magnification level of 3.00 diopter for close-up work. It is not for users who need adjustable magnification or lower strengths such as 1.00, 1.50, 2.00, or 2.50 diopter. Buyers with helmets that do not accept standard 2x4 inch cover plates should look at other solutions.

Fixed 3.00 diopter strength

The single specification that determines compatibility is the fixed 3.00 diopter magnification rating. This lens does not offer variable magnification steps. Verify that your welding helmet accepts a universal 2x4 inch replacement cover plate before purchasing.

How it compares

Measured against everything we stock in Welding Equipment & Positioners, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 92% of the 1,978 comparable items (median $50.99).

Specifications

Product
Brand nameWALTER SURFACE TECHNOLOGIES
Product typeWelding Protection

Questions about this item

Will this lens fit my existing 5x4" welding helmet?

Yes, the UML-300 replaces the 2x4" rear cover plate and fits any manufacturer's 5x4" or 4x5" helmet with vertical or horizontal mounts.

Can I use the 3.00 magnification with my current auto-darkening filter?

The lens mounts behind the filter cartridge, so it works with any auto-darkening filter that accepts a standard 2x4" cover plate.

How do I verify the 3.00 diopter strength is correct after installation?

Hold the helmet at your normal welding distance; small print or a test coupon should appear sharply magnified without eye strain.

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