declination aiming circle (declinated aiming circle)

бусоль з пристроєм врахування поправок на магнітне схилення

periscopic aiming circle

aiming circle monocular

artillery aiming circle

azimuth aiming circle head

kill circle / aiming reticle

aiming dot; aiming mark; crosshair; crosswires; pointing mark; telescope laying mark

aiming lamp / aiming light

aiming post lamp / aiming post light

declination diagram

magnetic declination

declination chart

declination index

declination pin

angle of declination

magnetic variation / magnetic declination

map declination

grid declination

declination constant

declination protractor

declination statement

declination station

horizontal circle clamp

elevation circle

paraselenic circle

parhelic circle

antarctic circle

circle of position