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Jolly Roger Flag
On Thu, 18 Jan 2007 18:12:56 -0500, JohnH wrote:
The scope had one eyepiece. The troops would stop looking through it because they'd keep the other eye shut while looking. Soon both eyes would tire. By using the patch over one eye, they could use the scope keeping both eyes open, which was much less a strain on the eyes. Try just closing one eye for a couple minutes. You'll feel the strain. Now try just covering the eye with your hand. Got it. --Vic |
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