Optical Lens Trial Frame Full Function Optometry Frame four lens slots, three in front and one in back
A very light and full function optical lens frame. Provides smooth operation and precise measuring.
- Material: aluminium allay and plastic
- PD Scale: 48 mm – 80 mm, right and left is 24-40mm
- Knobs Fastened with Screws
- Back lens holders of round corners
- Easily-shaped ear rests
- Four lens slots, three in front and one in back
- Dimension: 270 x 185 x 50 mm
- Weight: About: 80 g
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