Features:
Economical basic manual lensometer
External reading system
AC/DC powered,very convenient to use
Specifications:
Eyepiece focusing: 0-±5D
Vertex power: range: 0-±25D, 0.125D steps
Cylinder axis: 0-180Á, 1Á steps
Prism power: 0-5_ (without prism compensator), 1_ steps
Accepted lens diameter: 16-86mm
Power supply: AC85-265V/ DC 3V (AA battery x2)