Pin-point

Granit Xhaka also forced Martin Dubravka into an smart save in the first half, before Aubameyang made it five goals in five appearances against the Magpies with an acrobatic finish after Martinelli's pin-point cross.

Source: wiktionary

Because most diesel failures can be traced to electrical faults, minor in themselves but often difficult to pin-point, any unscheduled halt during a trial run is often the signal for the frenzied unfolding of wiring diagrams and the appearance of an impressive array of voltmeters and circuit testers.

Source: wiktionary