Each of the four pages is 283/4 inches by 235/8 inches.
The US Constitution was written on parchment paper. Parchment is made from either calfskin, sheepskin or goatskin, although I could not find the exact makeup of the US constitution.
The exact dimensions of something
Yes, a mixture has exact amounts because if you are making a cake, you need exact measurements.
The exact measurements of a Humvee in inches is 184.5 inches long by 86.5 inches wide. It also has a height of between 77 and 79 inches.
For example is a pH-meter.
Usually in the centre. Check with brand and model of the shower to be installed for exact measurements or check the rough-in manual for the EXACT shower for proper measurements.
Being charged for the exact same crime twice. It is dis-allowed under the US Constitution.
To obtain reproducible and exact measurements.
So that they get exact amounts, making experiments worthwhile