Seg Height Measurement Tool

Segment height does not apply to single vision lenses.

Seg height measurement tool.

35215 t shaped pd ruler segment height gauge vigor ga215. How to measure your segment height. Segment height measurement gauge bifocal trifocal lens measuring vigor ga216 pack of 2. Second it reproduces the patient s eye height as an objective instrument so the optician can measure the seg height on the lens.

First for measuring the proper height of a progressive lens. Optometric lab lenses. Lab lenses lab supplies measuring devices height measuring sticker. There is a new twist on the old subject of measuring seg heights and progressive lens verification.

The determined segment height is specific to each. Align 0 scale to bottom of lens to identify seg height. Ecps of all skill levels can now get the seg height right y stick is made in germany. You can also use a ruler with centimeter measurements and simply times the result by 10 to get your millimeter measurement.

Segment height also known as seg height or sh is the vertical measurement in millimeters from the bottom of the lens in your frames to the beginning of the progressive addition on a progressive lens or the top line of a lined bifocal. Apply like a sticker to the front surface of lens. Measuring devices seg height instruments seg hi measuring gauge seg hi measuring gauge please sign in to order this item. Each sticker is reusable up to.

Put the glasses on your face and adjust them so that they sit comfortably. In short y stick removes the intimidation and subjectivity from seg height measuring said fischer. Ruler circumference measure. Using various measurement tools that are in any skilled optician s toolbox she still takes precise a b dbl pd seg height vertex distance pantoscopic tilt and frame wrap angle measurements needed for contemporary free form lenses.