It's about one-eighty-thousandth as heavy as The Sears Tower.
In other words, 2.80 tons is 0.000012590 times the weight of The Sears Tower, and the weight of The Sears Tower is 79,430 times that amount.(officially "Willis Tower" as of 2009) (Chicago, Illinois)
The Willis Tower weighs approximately 222,400 tons. The outer wall surface of the Tower is covered with black anodized aluminum panels which would total 110,000 sq. m (28 acres) if laid out together.
It's about 100,000 times as heavy as a Battery (AA).
In other words, 2.80 tons is 110,000 times the weight of a Battery (AA), and the weight of a Battery (AA) is 0.00000910 times that amount.(Alkaline)
An "AA" size battery weighs 0.0000260 tons. AA batteries came into common use during World War II and were given their name by the American National Standards Institute (ANSI) Committee C18 because they were smaller than the "A" size batteries which were invented first.
It's about 100,000 times as heavy as a Mouse.
In other words, 2.80 tons is 120,000 times the weight of a Mouse, and the weight of a Mouse is 0.00000830 times that amount.(a.k.a. "House mouse", Mus musculus) (adult)
The weight of a mouse is typically an average of 0.0000230 tons. While most mice typically live two to three years, the Methuselah Mouse Prize — an award administered by a non-profit organization which advances aging-related research — was once awarded to a team of scientists whose research resulted in a mouse living just under five years.
It's about one-one-hundred-fifty-thousandth as heavy as The Empire State Building.
In other words, 2.80 tons is 0.000007670 times the weight of The Empire State Building, and the weight of The Empire State Building is 130,000 times that amount.(New York City, New York)
The Empire State Building weighs approximately 365,000 tons. About 4% of the building's weight is its 6,000 cu. m (200,000 cu. ft) of limestone façade.
It's about 150,000 times as heavy as a Compact disc.
It's about 200,000 times as heavy as a Battery (AAA).
In other words, 2.80 tons is 210,000 times the weight of a Battery (AAA), and the weight of a Battery (AAA) is 0.00000480 times that amount.(Alkaline)
An "AAA" size battery weighs 0.0000130 tons. Batteries are named by the American National Standards Institute (ANSI) Committee C18 and AAA batteries were given their name because they were smaller than the "AA" and "A" size batteries which were invented first.
It's about one-three-hundred-thousandth as heavy as The Golden Gate Bridge.
In other words, 2.80 tons is 0.000003160 times the weight of The Golden Gate Bridge, and the weight of The Golden Gate Bridge is 316,000 times that amount.(San Francisco, California and Marin County, California) (Post 1986 weight reduction; total weight of bridge, anchorage, and approaches)
Following the completion of the 1986 project to eliminate excess material, the total weight of the Golden Gate Bridge — including its anchorages and approaches — is 887,000 tons. The two main cables in the spanning the bridge are spun out of a total of 129,000 km (80,200 mi) of wire.