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 ...

Laser Technology Inc. (LTI), manufacturer of professional-grade laser rangefinders, has released its improved TruPulse 360 laser, which features LTI’s TruVector 360° Compass Technology. The ...