(арт.) калібраційне кільце
declination aiming circle (declinated aiming circle)
marker antenna / marker beacon antenna
great-circle range
range circle
range marker
range-marker control
aiming circle
horizontal circle clamp
periscopic aiming circle
aiming circle monocular
artillery aiming circle
azimuth aiming circle head
killing circle
circle
danger circle
elevation circle
paraselenic circle
parhelic circle
antarctic circle
circle of position
great circle course
great circle distance
great circle heading
great circle route
kill circle / aiming reticle
polar circle
primary great circle spherical coordinate system
calibration circle
effects circle
watch circle
traverse circle
azimuth circle