II. AN important objection was made to me some years ago by Capt. Evans against the use of quadrantal correctors in the Navy, that they would prevent the taking of bearings by the prismatic azimuth ...

Asahi Kasei Microdevices (AKM) has launched its latest 3-axis electronic compass for portable appliances, the AK8963C. Electronic compasses measure geomagnetism to determine azimuth. This is used for ...