. Farrow's manual of military training . rm of sighting is not recommended. The so-calledfull sight should not be taught under any circumstances. If shownto the men at all, it should be for the purpose of pointing outa fault to be carefully avoided. 326 MILITARY TRAINING Remarks.—The eye can be focused accurately upon objectsat but one distance at a time; all other objects in the field ofview will appear more or less blurred, depending on their distancefrom the eye. This can readily be seen if a pencil is placed in thefield of view near the eye while looking at some distant objectThe pencil wi
. Farrow's manual of military training . rm of sighting is not recommended. The so-calledfull sight should not be taught under any circumstances. If shownto the men at all, it should be for the purpose of pointing outa fault to be carefully avoided. 326 MILITARY TRAINING Remarks.—The eye can be focused accurately upon objectsat but one distance at a time; all other objects in the field ofview will appear more or less blurred, depending on their distancefrom the eye. This can readily be seen if a pencil is placed in thefield of view near the eye while looking at some distant objectThe pencil will appear blurred. This is the condition met withby the normal eye in sighting a rifle. If the eye is focused on oneof the three points—the bulls-eye, the front sight, or the rearsight—the other two will appear blurred. This blurring effect isbest overcome by using the peep sight, as though looking througha window, and focusing the eye on the bulls-eye. The blurringof the peep hole will be concentric, giving a clear and easily de-. PEEP SIGHT. fined center. The blurring of the front sight will be less, butsymmetrical on both sides with very little blur on the top. It canbe readily and naturally brought to the center of the peep in light have less effect on the peep than on the opensight. But the limited field of view and lack of readiness in gettinga quick aim with the peep sight limit its use to those stages ofthe combat whenever comparative deliberationwill be possible. Inthe later stages of battle—especially when a rapid fire is to bedelivered—the open sight will, in most cases, be used. In thiscase the normal sight should be used, as the horizontal line at thetop of the notch of the rear sight affords a good guide for regu- SMALL ARMS FIRING 327 larity. Whatever sight is used, the eye must be focused on thebulls-eye, or mark, not on the front or rear sight. Soldiers will some times be found who do not know how toplace the eye in the line of sight;
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