P100
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A twist-open cap for quick water flow.
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1. Print our magnification chart
When printing, make sure to set to 'print to size' and not 'scaled to fit paper' for accuracy!
Click here to download the chart2. Take the test
Hold the printed chart 14 inches from your face. Start reading from top to bottom. Read until you can clearly read a full line.
3. Get your result
When you can clearly read a full line, look at the associated strength for that line and that is your strength!
