. Coast artillery drill regulations, United States Army, 1909. PL0TTIN6 BOARD. dm% for- reatiimohundredths of Degree, Connecting Barlnde« Clampndej Olst Inde* Knob. SiOir.—00. (To taoo page IGl. Heading Window for even Decrees /vy. 6. Oun Arn-i Azin-iurh oub-Scale FIRE-COXTEOL APPAKATTJS. 161 MOBTAE DEFLECTION EOABD. 780. The mortar deflection board is illustrated in Figure consists of a cylinder A, on the elements of which are num-bered, consecutively, azimuths from 1° to 21°, from 11° to 31°,etc., the last series running from 351° through 0° to 11°. Thedegi-ees only are on the cylinder,
. Coast artillery drill regulations, United States Army, 1909. PL0TTIN6 BOARD. dm% for- reatiimohundredths of Degree, Connecting Barlnde« Clampndej Olst Inde* Knob. SiOir.—00. (To taoo page IGl. Heading Window for even Decrees /vy. 6. Oun Arn-i Azin-iurh oub-Scale FIRE-COXTEOL APPAKATTJS. 161 MOBTAE DEFLECTION EOABD. 780. The mortar deflection board is illustrated in Figure consists of a cylinder A, on the elements of which are num-bered, consecutively, azimuths from 1° to 21°, from 11° to 31°,etc., the last series running from 351° through 0° to 11°. Thedegi-ees only are on the cylinder, the azimuth subscale Bgiving the subdivisions to °. Any desired series may bebrought into the slit on the shield R by turning the head below the subscale B is the drift scale C on thedrift-scale slide D, which is carried by the carriage D. Thecarriage is moved by turning the main traversing wheel is a pointer H on the carriage for setting to any azi-muth on the subscnle. The carriage I may be moved by thehead K independently of the carriage D. On the carriage Ithere are two pointers, the first, L, for setting the elevatio
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectartillerydrillandtac
