Description:

Professional to measure dioptric power of a lens and calculate the radius of curvature.

For use with both glass and plastic lenses.

Quickly identify and check base curve.

The precision scale is uncrowded and easy to read.

Convenient to use and easy to carry in a pocket.

Measuring Range: 0-20mm

Material: metal

Size: approx. 6x1.2cm/ 2.4x0.48 inch

Package Includes:

1x Lens Clock

Note:

Please allow 1-2cm(0.4-0.8 inch) size difference due to measurement. Thank you!