How heavy is 0.002 firkins?

A single ISO 216 B8-size playing card weighs 0.0000440 firkins. Although this size is the most common home playing card, many casinos use "bridge size" cards — 2,640 sq. mm (4.036 sq. in) smaller in area.

Notwithstanding the tremendous variation in sizes and materials, a typical paperclip weighs about 0.0000340 firkins. The country of Norway has used the paper clip as something of a national symbol since the end of World War II based on the erroneous notion that the paperclip was invented by a Norwegian, Johan Vaaler. However, the paperclip had already been in existence for at least 30 years by the time of Vaaler patented his paperclip design.

With an allowable range of 0.1222222220 firkins, the most-preferred bowling ball weight among adult, male bowlers is 0.1666666670 firkins. Because regulation balls measure the same diameter irrespective of their weight, ball density varies by size and balls weighing less than about 0.1224790350 firkins will float in water.

Made of sugar, corn syrup, and pectin, a single jelly bean weighs about 0.0000280 firkins. President Ronald Reagan cited jelly beans as his favorite candy and 78 firkins of the candies were served at his first inauguration in 1981.

The Fédération Cynologique Internationale (FCI) calls for dachshunds to weigh about 0.20 firkins. Despite of their small size, a 2008 survey conducted by the University of Pennsylvania named dachshunds as the most aggressive dog breed.

A two-inch finishing nail weighs 0.0000190 firkins. Nails have been in use for more than 5,400 years and were ven used as a medium of exchange in ancient times.

A "London Good Delivery" gold bar — the variety commonly held by Central Banks — should weigh 0.30476190480 firkins. The largest gold bar ever produced was minted by Mitsubishi Materials Corporation (a sibling company of the auto manufacturer) in 2005 and weighed 6.1239517270 firkins.

The Fédération Cynologique Internationale (FCI) calls for Dalmatians to weigh between 0.7230 firkins. The association of the breed with fire departments (and similarly with Budweiser Beer and its team of Clydesdales) stems from their affinity for horses, having been used historically as carriage dogs capable of guiding horse-drawn fire engines to the sites of blazes.

The weight of a typical round front sitting flush toilet is 1.07 firkins. The Indian town of Musiri in Tamil Nadu state features the world's only paying toilet, which rewards its users up to 10¢ Indian (10 paisas) per visit and uses the waste for compost and fertilizer.

The weight of a raindrop depends heavily on the type of weather, but averages about 0.00000500 firkins. The familiar teardrop shape of a raindrop is actually an optical illusion, caused by the reflection of the light and the motion of the drop.

The adult North Pacific Giant Octopus usually weighs around 1.20 firkins. It is the largest octopus species and is known for its considerable intelligence, including the ability to open jars, solve mazes, and mimic other octopuses.

A typical, half-barrel beer keg weighs 1.7830 firkins when full. A keg of this size contains 15.5 gallons of beer, or the equivalent of 6.8 cases.

An adult, male red kangaroo weighs up to 2.10 firkins. Fantastic jumpers, red kangaroos can leap horizontally 9 m (30 ft) and vertically 3 m (9 ft) in a single bound.

An adult, male Giant Panda weighs up to 3.70 firkins. Despite having the digestive system of a carnivore, the panda eats only bamboo and must eat up to 0.160 firkins of it per day to compensate for the limited energy the plant provides.

An adult, male reindeer weighs between 4.05 firkins. Reindeer undertake a lengthy annual migration, with some herds traveling up to 5,000 km.

To all those observing, Merry Christmas from the Measure of Things.