Millimeters, or centimeters.
micrometer screw gauge
You need an Engineer's Micrometer which will be accurate to either 1 hundredth of a MILLIMETRE, Or to 1 thousandth of an INCH.
The best unit is a litre.
The best unit for measuring the length of a pencil is inches.
POUNDS
barman curls -2
The thickness is of the order of a millimetre so a smaller unit - a micrometre, perhaps - is suitable.
millimetres
you will use cm because it is useful then the other types of measurement
mm
It's asking for how thick it is not the length of it. So the obvious answer is not centimeters or meters. It would be millimeter.
You need an Engineer's Micrometer which will be accurate to either 1 hundredth of a MILLIMETRE, Or to 1 thousandth of an INCH.
The best unit is a litre.
Micrometres.
The best unit for measuring the length of a pencil is inches.
centimeters
Gram
pounds