It's about as heavy as a Compact disc.
It's about one-and-three-tenths times as heavy as a Battery (AAA).
In other words, the weight of a Battery (AAA) is 0.770 times 15 grams.(Alkaline)
An "AAA" size battery weighs 12 g. 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 seven-tenths as heavy as a Mouse.
In other words, 15 grams is 0.710 times the weight of a Mouse, and the weight of a Mouse is 1.40 times that amount.(a.k.a. "House mouse", Mus musculus) (adult)
The weight of a mouse is typically an average of 12 to 30 g. 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 three-fifths as heavy as a Battery (AA).
In other words, 15 grams is 0.630 times the weight of a Battery (AA), and the weight of a Battery (AA) is 1.60 times that amount.(Alkaline)
An "AA" size battery weighs 24 g. 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 two times as heavy as an Eye (Human).
In other words, 15 grams is 2.10 times the weight of an Eye (Human), and the weight of an Eye (Human) is 0.480 times that amount.(adult)
A fully developed eye (in a person over the age of thirteen), weighs about 7.10 grams. The pupil of the eye varies depending on the amount of light it is exposed to, but typically measures about 4 mm across.
It's about two-fifths as heavy as a Light Bulb.
In other words, 15 grams is 0.440 times the weight of a Light Bulb, and the weight of a Light Bulb is 2.30 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 34 grams. The tightly-coiled filament inside a bulb of this size would measure about 579mm if uncoiled and stretched out.
It's about two-and-a-half times as heavy as a Quarter.
In other words, 15 grams is 2.6460 times the weight of a Quarter, and the weight of a Quarter is 0.37790 times that amount.(United States quarter-dollar coin) (a.k.a. Quarter dollar, a.k.a. America the Beautiful quarter, a.k.a. two bits)
The America the Beautiful series quarters, which began to enter circulation in 2017, weigh 5.670 g each. In answer to the common riddle, there are 119 ridges around the edge of the coin in its current design.