Herb ’n’ Lorna, Chapter 14 continues: BEFORE THE WAR, the best slide rules had come from Germany. Now the need for slide rules — for calculating artillery trajectories, plotting courses, calculating wind drift, figuring time to target, and the like — was great and pressing. ...
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351: Before the war . . .
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Herb ’n’ Lorna, Chapter 14 continues: BEFORE THE WAR, the best slide rules had come from Germany. Now the need for slide rules — for calculating artillery trajectories, plotting courses, calculating wind drift, figuring time to target, and the like — was great and pressing. ...