Specifications
Measurement range
Curvature radius	5.5-11mm
Diopters	35-68D
Minimum Division
Radius	.02mm
Diopter	.25D
Minimum surface required	R=5.5mm o 1.65mm, R=7.5mm o 2.36mm, R=11mm o3.36mm
Head rest adjustment range	90 degree
Mainframe volue	300 x 280 x 510 mm