Important - The system trouble issues including emails and web ordering have been solved! However due to technical issues, emails sent to Edmund Optics from July 28, 2019 to August 7, 2019 may NOT have been received. Please resend your email now. We sincerely apologize for this inconvenience.
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.