Centimetres and/or millimetres - depending on the size of the piece !
see the metric for chalk is metre
gRAMS
The metric unit is a millilitre. The metric unit is a millilitre. The metric unit is a millilitre. The metric unit is a millilitre.
Metric unit is easy. Costomary unit is an advanced unit
A litre is a metric unit. A quart is two pints - an imperial unit.
An inch.
gRAMS
This question is misguided. Centimetre is a metric unit.
Metres or centimetres.
Millimeters.
The metric unit is a millilitre. The metric unit is a millilitre. The metric unit is a millilitre. The metric unit is a millilitre.
Kilometres.
Feet
grams
The newton. (The kilogram is not a unit of weight or force.)
grams
It is a metre.
centimetre.