It's about 85,000 times as heavy as a Tennis Ball
In other words, 749.640 stones is 82,500 times the weight of a Tennis Ball, and the weight of a Tennis Ball is 0.0000121 times that amount.(ITF Standard; for Type 2 ball)
Per International Tennis Federation standard, regulation tennis balls must weigh about 0.00909 stones. 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 100,000 times as heavy as a Golf Ball
In other words, 749.640 stones is 103,600 times the weight of a Golf Ball, and the weight of a Golf Ball is 0.000009653 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 0.007233 stones. 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 150,000 times as heavy as a Light Bulb
In other words, 749.640 stones is 140,000 times the weight of a Light Bulb, and the weight of a Light Bulb is 0.0000071 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 0.0054 stones. The tightly-coiled filament inside a bulb of this size would measure about 579mm if uncoiled and stretched out.
It's about one-one-hundred-fifty-thousandth as heavy as The Golden Gate Bridge
In other words, 749.640 stones is 0.00000591 times the weight of The Golden Gate Bridge, and the weight of The Golden Gate Bridge is 169,000 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 127,000,000 stones. The two main cables in the spanning the bridge are spun out of a total of 129,000 km (80,200 mi) of wire.
It's about 200,000 times as heavy as a Battery (AA)
In other words, 749.640 stones is 200,000 times the weight of a Battery (AA), and the weight of a Battery (AA) is 0.0000050 times that amount.(Alkaline)
An "AA" size battery weighs 0.0038 stones. 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 250,000 times as heavy as a Mouse
In other words, 749.640 stones is 230,000 times the weight of a Mouse, and the weight of a Mouse is 0.0000043 times that amount.(a.k.a. "House mouse", Mus musculus) (adult)
The weight of a mouse is typically an average of 0.0033 stones. 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 300,000 times as heavy as a Compact disc
In other words, 749.640 stones is 320,000 times the weight of a Compact disc, and the weight of a Compact disc is 0.0000031 times that amount.(a.k.a. CD)
A compact disc typically weighs 0.0024 stones. Data is stored on CDs by encoding into the track a series of tiny pits — each between 3.5 and 850 µm (0.00014 and 0.033 in) in length.