vector sights - sighting systems using the vector principle and incorporating a mechanical representation of the vectors of the bombing triangle; a. pre-set vector - a sighting system in which the values for height, airspeed and wind are set manually on the bomb sight; b. continuously set vector - a sighting system in which the values for height, airspeed and drift are automatically and continuously updated, tachometric or synchronous sights - sighting systems which automatically release the bomb at the correct bombing angle by maintaining the sight line on the target, thus determining the speed relative to the target and in some cases the track through the target, angular velocity sight - a sighting system in which the correct release point is determined when the angular velocity of the target relative to the bomb aimer reaches a precomputed value, tahhomeetrilised ehk sünkroonsed sihikud – sihikud, mis automaatselt vallandavad pommi õige pommitamisnurga all, hoides sihtimisjoont sihtmärgil, seega määrates kiiruse sihtmärgi suhtes ja mõnel juhul telje läbi sihtmärgi, nurkkiirussihik – sihik, mille puhul õige heitepunkt määratakse sel hetkel, kui sihtmärgi nurkkiirus sihiku suhtes ulatub ettearvutatud väärtuseni