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3.3 OPERATING THE CLAMP, MARKING DEVICE AND LENS TABLE
3.3.3 LENS TABLE
The lens table serves to standardize the axis of cylindrical lenses and the
height of the frame for measuring vertical prism.
1) Adjust the lens table so that it meets bottom edge of the frame by
pushing or pulling it.
2) The outer diameter of the lens is indicated on the scale on the upper
surface of the nose section.
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