The standard crankshaft journal sizes for a Holden 304 are typically 2.5591 inches for the mains and 2.0866 inches for the rods. It's important to verify this information with a specific engine or consult the manufacturer's specifications for accuracy.
2.750''
Mains: 2.45" Rods: 2.10"
There are several detailed publications with this info. Your public library probably has a manual for your car with this info in it
The AERA ( Automotive Engine Rebuilder's Association ) is a great source for this kind of information. Their website is at the related link below. It does require a membership.
7 inches for women, and 8 inches for men are the standard bracelet sizes.
I know that the stock connecting rod journal diameter is 2.123"
There is no standard size.
The standard sizes of the Edison screw are T8 (25mm) and the larger T12 (38mm).
The standard sizes of exercise equipment can vary depending on the machines. Rowing machines, bikes, and treadmills are all different sizes.
Apparently not. According to the Sealy website the sizes are standard for use at home or in the Hospitality Industry.
There is no standard size. Different manufacturers make different sizes, and many make several sizes.
The standard sizes that area rugs are sold in are: 2' by 3', 3' by 5' and 4' by 6'