Below is a group product of Auto Refractometer &Lensmeter.
Product List
Specification:
Measuring Range Spherical -20-+20D(VD=12)0.12Dsteps
Cylinder -8-+8D 0.12Dsteps
Axis ...
[Last Updated: 2009-12-03]
Specification:
Measuring Range Spherical -20∞ +20D(VD=12)0.12Dsteps
Cylinder -8∞ +8D ...
[Last Updated: 2009-12-03]
Specification:
Spherical -25 to +25D 0.01/0.12/0.25D steps
Cylinder
-9.99 to +9.99D 0.01/0.12/0.25D ...
[Last Updated: 2009-12-03]
Spherical -25-+25D 0.01/0.12/0.25D steps
Cylinder -9.99-+9.99D ...
[Last Updated: 2009-12-03]