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Caption: War Publications - WWI Compilation 1923 - Article 46
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Since it is necessary to work with the fines of angles in the accuraIC solution, the angles are given in degrees, because every mKlc in i \vmild have to be changed to degrees before tables am be used base GB has been range ployed. This was done in order to avoid triangles with one an^lc nearly zero. The student is advised to const n u t the figures. Problems to be solved l>y the nieth I of parallaxes have not been inserted, because an artillery officer receives in the army a thorough eterni imation. Re arks: It will be noticed that if the battery commander's station (B) is chosen as aiming point, that is, if B and P coincide, J\'b yields IVa as a special case. It might therefore seem an unnecessary complication to choose a separate aiming point. However, the method of approximation explained above (or similar methods) permit a very rapid calculation of P and 7 within the limits of accuracy required for Field Artillery, so and distinct points. On the other hand, it is desirable to choose the aiming point as distant as possible, while the battery commander's station is generally desired at a moderate distance from the gun. This arrangement is considered best for practical reasons connected with the question of nre control by the battery commander and which arise largely from the fact that the Field Artillery never uses individual guns as a unit, but whole batteries. In fact, the indirect method of pointing, with a distant aiming point distinct from the battery commander's station, is frequently employed even when the target is visible from the guns, on account of the advantage of centralized fire control. method ot par Correction: p. 24 read Rule: One obtains, however B and P are chosen, a relation of the d = A±P±T. 29 , .
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