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1. More than 300 clear visual standards
2. Measuring distance:1-6.5m, can be precisely adjusted, the highest precision is 0.1M
3. Can be put on the desktop and wall, which is easy to choose
4. Suitable for the ophthalmology of the hospital and optometry in the glasses shop
5. Mirroring Function: In any state of the LCD chart mode, press the 0.8-1.0 visual button of the line of the number 5 several times in succession until the screen displays "MIR_MODE:00", then the mirror mode setting can be performed. And presse the button again, it will loop between "MIRR_MODE:00" and "MIRR_MODE:01", "MIRR MODE:00" is normal use, and "MIRR_MODE:01" is used for mirroring.
Huanyu Instrument Standard Measuring Charts Letters/Children/Number/TumblingE/LandoltC/Red-greenBlindness/Contrastsensitivity/Red/Green/MinuteStereo/Schober/Cross/Fixation/Crossgrid/Beehive/AstigmaticClockDial/Masking/Horizontalline/Verticalline/Singleletter Technical data Display type: 19-inchTFT LED Measuring distance: 1-7m (adjustable) and can be adjusted accurately, the maximum accuracy is up to 0.1M Dimensions: 19 inch Main body: 417 long x410 high x16 thick mm Weight: Main body: 5kg Remote Controller: 0.21kg Power Source: AC100-240V + 10%, 50/60Hz Power Consumption: 25W