The phrase "a range of roughly" is correct and usable in written English.
It can be used when you want to indicate an approximate range or estimate of values, quantities, or measurements.
Example: "The project is expected to take a range of roughly three to six months to complete."
Alternatives: "an approximate range of" or "a rough estimate of".
Following this protocol, at a range of roughly six paces, both men fired.
On Monday, a sniper struck an Afghan soldier in the neck at a range of roughly 500 to 700 yards.
The 9N210 bomblets are carried in surface-to-surface Uragan (Hurricane) rockets that are fired from the backs of trucks and have a range of roughly 22 miles.
The S-200 has a range of roughly 186 miles, according to U.S. military documents, and can hit targets flying at altitudes of around 130,000 feet.
The S-300 has a range of roughly 90 miles and could also be used to target incoming U.S. cruise missiles.
But Mr. Bush's concern became more urgent last week when American officials said Iran had carried out a successful test of the Shahab-3 missile, which has a range of roughly 800 miles.
But the missile that the Iranians actually fired Wednesday, they added, was a less advanced model known as the Shahab-3a, which has a range of about 1,500 kilometers, or roughly 900 miles.
A small, flat battery underneath the passenger compartment would power the Box, providing a range of about 40 kilometers, or roughly 25 miles, and a top speed of 35 m.p.h.
Such a missile would have a maximum range of roughly 4,160 miles, or 6,700 kilometers, on a standard trajectory, he said.
Flight tracking website Flightradar24 said an Airbus A380 operated by Malaysia Airlines has a flying range of roughly 8,200 miles (13,200 km) while a Boeing B772ER has a range of 8,900 miles (14,300 km), on its Twitter page.
Briefly, up to six orders of magnitude of stimulus intensity were presented to subjects using combinations of Kodak Wratten 1.0 and 2.0 neutral density filters (Eastman Kodak Co., Rochester, NY, USA) and a white LED light source (Advanced Illumination SL-2420-WHI SL-2420-WHI SL-2420-WHIf roughly three log10 units and a maximum output intensity of 1585 cd m−2.
