instantaneous percussion fuze

instantaneous vertical speed indicator / instantaneous vertical-speed indicator (IVSI)

instantaneous action fuze

percussion fuze

electrical and percussion fuze

sensitive percussion fuze

shell fuze combination / projectile-fuze combination

instantaneous burst

instantaneous detonating fuse

instantaneous radiation

instantaneous radius of the flight path

instantaneous vertical velocity computer (IVVC)

instantaneous motion of a fluid element

instantaneous rate of flow

instantaneous velocity

instantaneous frequency measurement (IFM)

percussion arrangement

percussion bullet

percussion cap

percussion fired

percussion lock

percussion-type firing mechanism

angle of percussion

direct percussion

force of percussion

percussion musket

oblique percussion

axial percussion bracket

lateral percussion bracket

percussion action

percussion adjustment

percussion alarm

percussion bracket