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How big is 921 drams?

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It's about seven-tenths as big as The Blood in a Human Body
In other words, the size of The Blood in a Human Body is 1 times 921 drams.
(for 70 kg body; average altitude; average)
The volume of blood in the average human body is about 1,000 drams. Persons living at high altitude, however, may have up to an additional 500 drams of blood to compensate for the lower oxygen level.
It's about two-thirds as big as a Bowling Ball
In other words, 921 drams is 0.64612456680 times the size of a Bowling Ball, and the size of a Bowling Ball is 1.54768917850 times that amount.
(USBC specifications; tenpin)
According to United States Bowling Congress specifications, a tenpin bowling ball should measure at least 10.795 cm (4.25 in) in radius for a total volume of about 1,425.42173340 drams. Because regulation balls measure the same diameter irrespective of their weight, ball density varies by size and balls weighing less than about 5 kg (11 lbs) will float in water.
It's about two times as big as a Human Stomach
In other words, the size of a Human Stomach is 0.50 times 921 drams.
(human; adult)
An average adult human stomach has a volume of about 500 drams. A newborn baby has a stomach capacity of just 8 drams.
It's about two times as big as an Ostrich Egg
In other words, 921 drams is 2.086 times the size of an Ostrich Egg, and the size of an Ostrich Egg is 0.47940 times that amount.
(Struthio camelus) (for common ostrich; average)
The largest egg produced by living birds, ostrich eggs measure about 432.80 drams in volume. The eggs take about nine weeks to hatch, with males and females taking turns incubating them.
It's about half as big as a Basketball
In other words, 921 drams is 0.479243908360 times the size of a Basketball, and the size of a Basketball is 2.0866201585 times that amount.
(NBA official ball standards, Size 7)
A NBA official ball, manufactured by Spalding, is a Size 7 ball and measures about 1,921.77716590 drams. The surface of these balls have 4,118 pebbles with a diameter of 2.5 mm each.
It's about two-fifths as big as a Bowling Ball (packed)
In other words, 921 drams is 0.413519722750 times the size of a Bowling Ball (packed), and the size of a Bowling Ball (packed) is 2.41826434140 times that amount.
(64% packing density) (USBC specifications; tenpin)
According to United States Bowling Congress specifications, a tenpin bowling ball should measure at least 10.795 cm (4.25 in) in radius for a total volume of about 1,425.42173340 drams. Because regulation balls measure the same diameter irrespective of their weight, ball density varies by size and balls weighing less than about 5 kg (11 lbs) will float in water.
It's about three-tenths as big as a Basketball (packed)
In other words, 921 drams is 0.306716101340 times the size of a Basketball (packed), and the size of a Basketball (packed) is 3.26034399770 times that amount.
(64% packing density) (NBA official ball standards, Size 7)
A NBA official ball, manufactured by Spalding, is a Size 7 ball measures about 1,921.77716590 drams. These balls have 4,118 pebbles each with a diameter of 2.5 mm