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Protective case included.
The goniometer is used to measure the angle of any abnormal head-tilt or an abnormal position, different from the vertical or horizontal position.
To assess degree of afferent pupillary defect.6 filters.
Special slotted scale allows very accurate monocular measurements. Standard mm scale on the top edge with a pupil diameter identifier at the opposite edge. Stainless Steel.
PD Ruler, plastic, with mm scale