O buckshot is 0.32" (8.1mm) in diameter.
http://en.wikipedia.org/wiki/Shotgun_shell#Buckshot
9 of these pellets weighs an ounce, so there are 144 per pound. A pound is 7000 grains, which means a single O buckshot pellet weighs 48.6 grains. This is just more than half what a typical pistol bullet of that caliber weighs, and less than a third of what a typical 8mm rifle bullet of that same caliber weighs.
The diameter.
3.14159
Pi.
Outside diameter
1.5 t o 2mm
When you divide the circumference of a jack-o-lantern by its diameter you get Pumpkin Pi.
A thread-o-let is a female by weld connection. It is commonly seen on large diameter pipes where a valve or other connection (typically much smaller in diameter) is made.
radius = 1/2 diameter
4
about 4 million red blood cells in a o.
O-Rings have 2 diameters. The first is the diameter of the rubber from which the ring is made, the second is the diameter that the ring forms. "Nominal" in the case of the former reflects the fact that the ring may not have the exact same diameter all the way around. This is due to the imperfect nature of its manufacture. "Nominal" when applied to the latter means that because an O-ring is inherantly flexible, its outside diameter is hard to measure exactly. The word "Nominal" simply means average, or most easily measured. Put a steel rule across an O-Ring in 1,000 different directions and you will always get a slightly different reading.
the andser is 9