Multipurpose test frame for the frames selection 繁体试镜架-N2
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¥ 520.00
Description
- The distance from the axes of the lens holders to the axis of the frame: from 24 to 40 mm (step: 1 mm)
- Angle of rotation: from 0 ° to 180 ° (step: 5 °)
- Adjust the length of the ear hook: no
Описание товара
The frame is designed to install astigmatic and stigmatic trial spectacle lenses, prisms, prism compensators, as well as filters, diaphragms and other optical elements. To determine the direction of astigmatism and strabismus, the rim is equipped with an angular scale. Rotation of lenses, prisms and other optical elements relative to the scale is made using a lens holder. The change in the center-to-center distance is made separately, while the value is read from the center of the nasal seal in the range from 24 to 40 mm.
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¥ 520.00
