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JH-41 5M Normal Children logarithmic visual chart light box
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Item#
JH-41
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Description
| Specification: | |||||||
| Type of chart: | Graphical | ||||||
| Distance of testing: | 5m | ||||||
| Range of testing: | from 4.0 to 5.3 | ||||||
| Record of vision: | five points record, decimal record, fraction record | ||||||
| Size: | 920 * 280 * 100mm | ||||||
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