Accurate linear measurement.
by dividing diameter by 2 :)
A vernier caliper is a precision measuring instrument used to measure dimensions such as length, depth, and internal/external diameters with high accuracy. It features a main scale and a sliding vernier scale, allowing for measurements to be taken with a resolution typically of 0.01 mm or 0.02 mm. The vernier caliper can measure both metric and imperial units, making it versatile for various applications in engineering and manufacturing.
The answer depends on the size of the cube: it could be a micrometre, vernier callipers, a ruler, a tape measure.
It depends on what you are trying to measure. If you are measuring the length of a car, for example, any reading obtained using vernier callipers is likely to be totally useless. The key is to select a tool that is appropriate to the task.
A vernier caliper or a micrometer can be used to measure the internal diameter of a beaker. These tools provide accurate measurements of dimensions, including internal diameters, with precision.
Because they were invented by Pierre Vernier in 1631.
I would use vernier callipers.
To measure things, or is that just too obvious? A.K.A. Vernier Callipers
Measure the length of its side - using vernier callipers for accuracy - and cube the result.
4
Pythagoras
No
If you have calibrated eyeballs
yes it is 2.25
Accurate linear measurement.
by dividing diameter by 2 :)