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Family ID The Family ID is used to identify product family presentations and can be used to quickly access presentations utilizing the search. #1770

Lens Diopter Gauge

Reads Curvature up to 17 Diopters
Will Not Scratch Glass Lenses
Compatible with 21mm or Larger Lenses

Precision optics gauge will not scratch glass lenses. Measures positive and negative lenses 21mm diameter and larger. Directly reads curvatures from 0 to 17 diopters in ¼ increments. 2" diameter gauge. Values based on the index of 1.5.