Two methods:
1. mark a point on the circumference of the round object; put a mark on the floor; line up the marks and roll the object along the floor until the mark retouches the floor; use the meter rule to find the distance between the marks on the floor.
2. measure the diameter of the round object using the meter rule and multiply it by π (pi ≈ 3.14159)
If you have calibrated eyeballs
You can measure any object you like using tonnes, however, unless the object is a massive one like an Elephant or a Bus, there is likely to be lots of zeros after (or before) a decimal point which would make it not a very sensible unit to measure the mass of the object.
Length, Multiplied by Width. L x W Measure using a meter stick, yard stick, ect...
100 cubic metres - without using a calculator !
If it has centimeter and millimeter markings .... One. You could measure something like 35 centimeters and 6 millimeters, which would be 35.6 in numbers. Reading anything shorter than a mm on a meter stick is guesswork.
If you have calibrated eyeballs
Using a meter stick, measure out a meter. Then turn pi/2 radians according to the unit circle and measure out another meter.
no
you can calculate a meter by using maybe a meter stick or a tape measure...
using a gauss meter
Wrap the strip of paper around the plate or can and mark it where it completes a full circle around the object. Then lay the strip on a flat surface and measure the marked length using the ruler. That length is the perimeter (circumference) of the round object.
Thermometers are used to measure temperature.
using a pH meter.
you can calculate a meter by using maybe a meter stick or a tape measure...
Using the correct meter, yes.
by using measuring meter
It is very easy to measure pH using a pH meter.