JH-38 Normal 5M Multi functional visual chart light box ,10cm thickness
Description
| Specifications: | |||||||
| * Normal multi-functional vision chart light boxes | |||||||
| * Decimal record:0.1~2.0 | |||||||
| * 5 point record:4.0~5.3 | |||||||
| *Product size:92*45*10cm | |||||||
| * Red-green chart,worth 4 dots,ray astigmatism chart,round dot astigmatism chart. | |||||||
| * Produced accroding international stand GB11533-89. |
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