China Keratometer

China Keratometer
Excellent optical system, easy operation, high quality at basis of reasonable price

Main optical lens were made of imported material, to assure high clearance and brightness

All lens has anti-reflecting, moisture-proof, and mildew-proof coating to assure perfect optical quality under long time useKeratometer JM-1 Specification Table
Parts Name Specification JM-1
Dimension of Surveyor's Staff 18mm× 24mm
Distance of Surveyor's Staff and Cornea 175mm
Total Magnification 18X
Objective Magnification 1.2X
Eyepieces WF15X
Widefield eyepieces WF15X,
Field number φ 13mm
Curvature radius 5.5-11mm

Diopter 30-60D
Least Graduate radius: 0.02mm, diopter: 0.25D
Refractive Index 1.3375
Least Diameter of Measure r=5.5mm: φ 1.65mm, r=7.5mm: φ 2.3mm, r=11mm: φ 4
Astigmatism graduate range 0-180°
Astigmatism graduate alternation 5°
Illumination Bulb 6V/20W, Halogen bulb
Input Voltage AC 220V/50Hz(or AC 110V/60Hz)
Range of Rise or Drop of Slipway 0-30mm
Move Range of Slipway Left and right: 100mm, Front and back: 90mm
Fluctuate Move Range of Jaw Part 50mm
Difference of LYQ and LYQ-S model LYQ-S cornea curvature without work table