Diregarding the numbers, the order of size of measurements (from largest to smallest) is miles > Yards > Feet > Inches. So any measurements in inches will be the most precise.
foot is the most precise way to measure any unit
Both are units of measure. Neither is more 'precise'. The precision is to do with the accuracy of the measurement taken and not by the units used.
The smallest one - but it makes sense only if you have means of measuring to that precision. Also, more precise is not the same as more appropriate. For example, a micrometre is more precise than a kilometre (by a factor of one billion) but if it makes no sense at all to measure the distance between two cities in micrometres! Or, a microgram is more precise than a kilogram (again by a factor of a billion), but it makes no sense to measure my mass in micrograms. My mass will increase by more than that after I've had a mug of coffee!
cm most likely if you want to be precise. but meters if you are making an estimate.
precise is precise and concise is concise
foot is the most precise way to measure any unit
Yes. To be precise, the wavelength is the length of one precise cycle, and one way to measure that is from top to top.
When you estimate you guess the size of something, but when it is precise you have to actually measure it, e.g with a ruler.
They are equally precise - they are simply measurements of temperature. Precision depends on the device used to measure.
The most precise is the smallest: the cup.
5 gallons
Both are units of measure. Neither is more 'precise'. The precision is to do with the accuracy of the measurement taken and not by the units used.
Screw gauge is more precise than vernier calliper because it can measure small objects upto 0.001cm while vernier calliper can measure objects upto 0.01cm.
The answer depends on the graduations marked on the ruler.
to help with measurement that is related to the unit of measure
the ruler is straight and the string is not so it makes it harder for you to measure the string
122/3 is more precise because a third is a smaller measure than a half.