TECHNICAL MANUAL TM 6-220
FIELD ARTILLERY FIRE-CONTROL INSTRUMENTS
WAR DEPARTMENT WASHINGTON , February 26, 1941
62 STRONY, 17 CZARNOBIAŁYCH FOTOGRAFI, 24 RYSUNKI.
ROZDZIAŁY:
I . GENERAL
II . AIMING CIRCLE, M1918 (FRENCH), AND M1 (NEW AMERICAN)
III . AIMING CIRCLE, M1916 AND M1916M1
IV . BATTERY COMMANDERS TELESCOPE, M1815
V . FIELD GLASSES
VI . PRISMATIC COMPASS, M1918
VII . RANGE FINDER, M1916.
VIII . NONOPTICAL INSTRUMENTS.
IX . ADJUSTMENT AND CARE.