It's about 6,500 times as heavy as a Tennis Ball.
In other words, 0.42550 tons is 6,690 times the weight of a Tennis Ball, and the weight of a Tennis Ball is 0.000149 times that amount.(ITF Standard; for Type 2 ball)
Per International Tennis Federation standard, regulation tennis balls must weigh about 0.00006360 tons. Competition balls are also tested for bounce height, with the standards requiring that a ball dropped from 254 cm must bounce back to a height of 135 cm to 147 cm.
It's about 8,500 times as heavy as a Golf Ball.
In other words, 0.42550 tons is 8,404 times the weight of a Golf Ball, and the weight of a Golf Ball is 0.000119 times that amount.(per R&A USGA Rules of Golf; maximum rule weight)
According to the Rules of Golf (as approved by the United States Golf Association and the Rules Committee of the Royal and Ancient Golf Club of Saint Andrews), golf balls must weigh no more than 0.000050630 tons. Golf balls are not required to have the familiar dimpled pattern, but the design has been popular since its invention in 1905 because it reduces drag while increasing lift.
It's about 10,000 times as heavy as a Light Bulb.
In other words, 0.42550 tons is 11,000 times the weight of a Light Bulb, and the weight of a Light Bulb is 0.0000910 times that amount.(a.k.a. lamp) (for A19-size, 60w, incandescent bulb by Bulbrite; package weight)
A standard, sixty-watt light bulb weighs about 0.0000380 tons. The tightly-coiled filament inside a bulb of this size would measure about 579mm if uncoiled and stretched out.
It's about 15,000 times as heavy as a Battery (AA).
In other words, the weight of a Battery (AA) is 0.0000630 times 0.42550 tons.(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 20,000 times as heavy as a Mouse.
In other words, 0.42550 tons is 18,000 times the weight of a Mouse, and the weight of a Mouse is 0.0000560 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 25,000 times as heavy as a Compact disc.
It's about one-twenty-five-thousandth as heavy as The Eiffel Tower.