SEXTANT

секстан - artificial horizon sextant - box sextant - bubble sextant - double sextant - electronic digital sextant - gyro sextant - hand sextant - hydrographic sextant - navigational sextant - night sextant - optoelectronic sextant - pendulum sextant - periscope sextant - radiometric sextant - radio sextant - radiooptical sextant - sounding sextant