Seg Height Measurement Tool

Second it reproduces the patient s eye height as an objective instrument so the optician can measure the seg height on the lens.

Seg height measurement tool.

You can also use a ruler with centimeter measurements and simply times the result by 10 to get your millimeter measurement. Segment height measurement gauge bifocal trifocal lens measuring vigor ga216 pack of 2. 35215d t shaped pd ruler segment height gauge pack of 12. Ecps of all skill levels can now get the seg height right y stick is made in germany.

The determined segment height is specific to each. 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. Segment height does not apply to single vision lenses. There is a new twist on the old subject of measuring seg heights and progressive lens verification.

The twist is the pupil marker sometimes known as the white pen here s how the pupil marker is used for these two processes we do everyday. 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. First for measuring the proper height of a progressive lens. Each sticker is reusable up to.

Use a ruler that has millimeter measurements. Lab lenses lab supplies measuring devices height measuring sticker. Apply like a sticker to the front surface of lens. Put the glasses on your face and adjust them so that they sit comfortably.

Ruler circumference measure. Align 0 scale to bottom of lens to identify seg height. 35215 t shaped pd ruler segment height gauge vigor ga215. Measuring devices seg height instruments seg hi measuring gauge seg hi measuring gauge please sign in to order this item.