Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 376
rvation-post, an observer gets therange of the target and telephones this range tothe plotting-room, where a rapid calculation ismade as to how much the gun should be elevatedand swung to the right or left. This calculationis then sent on to the gunners, who adjust thegun accordingly. When all is… … @ TJiidtTwood & Underwood HOW A GREAT GUN IS CONCEALED IN OPEN COUNTRY. above the parapet it is automatically fired. Therecoil throws the gun back to its crouching po-sition behind the breastworks. All that the enemysees, if anything, is the flash of the discharge. Courtesy of Scientific…
Children's literature
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