The phrase "a width of about" is correct and usable in written English.
You can use it when describing an approximate measurement of width in various contexts, such as construction, design, or physical dimensions.
Example: "The table has a width of about 60 inches, making it suitable for the dining area."
Alternatives: "an approximate width of" or "a width roughly equal to".
The PL shows a peak around 610 nm with a width of about 130 nm.
The basin is elongated in north south direction and has a length of about 4.5 km and a width of about 1.5 km.
They showed a single-sided velocity pulse with a width of about 6 s, while the EW component showed a double-sided pulse with a period of about 10 s.
With an orbital radius of about 53,200 km, it is narrow, with a width of about 113 km.
Maintaining a relatively large eye with a width of about 51 km, the cyclone intensified while nearing the shoreline of northern Queensland; by 0300 UTC the following day, though, a slight reduction in its size was noticeable, and by the time the cyclone made landfall, its eye was merely 41 km in diameter.
The Jordan River's plain then spreads out to a width of about 15 miles (24 km) and becomes very regular.
Peru Current, also called Humboldt Current, cold-water current of the southeast Pacific Ocean, with a width of about 900 km (550 mi).
Sediments are absent over a width of about 45 miles (70 km) on the oceanic ridge crests, and the flanks are only sparsely covered.
The Hickshaw is considerably shorter and smaller, with a slanting roof between 3 feet and 4 feet 10 inches tall, a width of about 30 inches and a length of 7 feet.
There is little genuine coastal plain between the escarpment and the sea, except in northern KwaZulu-Natal, where it reaches a width of about 50 miles (80 km), and in parts of Western Cape.
The Tonga Trench has an average depth of 20,000 feet (6,000 m) and a width of about 50 miles (80 km); it reaches a maximum depth of 35,702 feet (10,882 m).
