Commonly a specialised probe that mechanically scans a conventional 2D-image transducer is used.

The antenna mechanically scans in the vertical plane through the atmospheric limb every 65.5 seconds.

They scan mechanically. . . . Therein lies the ultimate consequence of their marginalization.

The radar has a mechanically scanned planar array antenna and is capable of tracking 10 targets.

The radar is scanned both mechanically and electronically and can track up to six targets within the same 110-degree arc in course tracking mode.

Honeywell in the United States also developed arrays of detectors which could cool at a lower temperature, but they scanned mechanically.

The radar uses two antenna to determine target altitude by the V-beam system with azimuth scanned mechanically.

The radar uses two antenna with azimuth scanned mechanically, but unlike the previous P-30 both antenna are horizontal, the radar not using the V-beam system to determine target altitude.

And yet, even under the Foundation with improved calculating machines and a new method of mechanically scanning the star field for a known "light signature," it sometimes took days to locate three stars and then calculate position in regions not previously familiar to the pilot.

My time is running out, she thought, her eyes mechanically scanning the food remaining on the shelf.