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For determining objective and subjective convergence points and measuring accommodation. Consists of a lightweight bar, 500 mm in length on which a sliding four-sided drum is mounted, with a different test on each panel.
Vinyl with cloth backing, matte embossed finish. Rollable and foldable. Size: 27″ x 3-7/8″ (68 x 9 cm)
Protective case included.
Optokinetic Drum, Black and White Stripes
There is a center fixation light with an on/off switch on the power supply. Length of each wing: 120 cm Width of each wing: 11 cm