Stereoscopic accuracy versus coincidence speed

How do stereoscopic and coincidence rangefinders compare?

Stereoscopic systems are more precise, while coincidence rangefinders acquire a rough range faster; using both would exploit each strength.

Stereoscopic rangefinders offer greater precision but take longer to establish a range. Coincidence instruments acquire a usable solution faster. An ideal arrangement would combine quick coincidence ranging with stereoscopic refinement, although navies generally committed to one system in quantity.