Frame adjustment plate and lens test card with two sides. One side of the frame adjustment plate is used for adjusting the frame, the other is used for external opening angle measurements.
Precise measurements in inches or millimeters, up to 6 inch/150mm. Using to measures screws, frame dimensions, hole sizes and more. Comes with hard shell storage case for protection.
Measures the distance between the cornea and spectacle or trial lenses (vertex distance). This becomes especially sensitive above plus or minus five diopters. 1 year warranty.
Digital PD meter with a high level of precision. Displays left and right eye measurements with a range from 22.5mm to 41mm. Near, intermediate and far viewing distance. Measures vertex distance. 1 year warranty
