Minutes of proceedings of the Royal Artillery Institution (1858)
Great Britain. Army. Royal Artillery Institution · Woolwich, Eng., : The Institution · leaf 72
nce from the faces of the angle-finders to their own pivots, equal to 3 ins. Hence, and therefore, as small angles vary as their sines. 9 480 \2 J Similarly, Y 480 \2 / , 1 or we shall have an error of about two per thousand in our apex, and con¬ sequently in our range. This, again, is too little… … Let BC = 40 yds. ABC = 35,82 a= 89° 83' ACB = 35,46 = 88° 89' 71,28 178° 12' .-. BAC = 72= 1° 48' and will be read by the angle^finders
Artillery -- Periodicals · Artillery -- Great Britain -- Periodicals
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
