(мор.) лінійка для проведення паралейних ліній
parallel barrage
parallel pursuit
spiral parallel groove
creeping parallel barrage
immovable parallel barrage
parallel sweep search
dependent parallel approach
independent parallel approach
plane-parallel flow
parallel
parallel approach
parallel track pattern
get the guns parallel on their zero line
mil rule / scale
rule of law
slide rule
strong-arm rule
aiming rule operator
aiming rule
alidade rule
gun rule
decision rule
Prandtl-Glauert rule
rule
rule-making
nautical slide rule
one half thickness rule
safe pocket rule