Manual eye testing drum. Use for checking the power of the eye. Usually used in laboratory, clinic, hospital, personal clinic, etc. Rotating instrument to test vision in which individuals are seated facing the wall of the drum. The speed of the drum and the duration of the test may be varied. Control groups are placed in a drum without stripes or rotation. Manufactured with premium quality raw-material and modern technology by experienced professionals. Tested by quality experts under the guidance of quality measures.
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