Quick Take: The Cube is a multi-functional tool.
Specifics: The clear Cube features one side scale for measuring PD height up to 50mm, another side scale for measuring pantoscopic angle from 0 to 20 degrees, and a pen-sized opening in the middle.
Selling Point: The pen-sized opening forms an easy, clear way to mark lenses for PD & Seg Height measurements, as well as to form perfectly straight orientation lines.
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