Gunnery: An Elementary Treatise, Including a Graphical Exposition of Field Artillery Fire

acid adjustment aiming point altitude angle of site azimuth B. C. telescope ballistics base battery commander bore bracket burst on graze caliber called combustion corrector crest curve decimal defilade deflection denominator determined detonation diameter direction distance dynamite effect elevation employed enemy equal error explosive extends both arms extends the arm feet per second field artillery field guns Figure fraction front frustum G₁ glycerin grains ground guncotton gunner gunpowder heat height of burst horizontal howitzer ignition increase indirect fire infantry line of fire line of guns mask measured method mil subtends military minuend muzzle nitroglycerin normal object obliquity observing station obtained parallax plane position powder practically pressure prism projectile quantity range rear reduced result right gun RULE.-Multiply saltpeter salvo sheaf shell shot shrapnel sight slant height smokeless powders square substances subtract sulphuric sulphuric acid surface target tion trajectory triangle troops velocity volleys whole number yards