You need an Engineer's Micrometer which will be accurate to either 1 hundredth of a MILLIMETRE, Or to 1 thousandth of an INCH.
millimeter or mm
Millimeters, or centimeters.
The best unit is a litre.
The best unit for measuring the length of a pencil is inches.
POUNDS
barman curls -2
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.
The thickness is of the order of a millimetre so a smaller unit - a micrometre, perhaps - is suitable.
Millimeters, or centimeters.
millimetres
mm
The best unit is a litre.
Micrometres.
The best unit for measuring the length of a pencil is inches.
Gram
pounds
Feet
A millimetre.