Food in the UK is measured in metric:
Liquid - ml
Solids - g & kg
The most common unit of electrical potential is the Volt (V)
The most common measurements are milimeters,cm, m ,km .Out of these units the basic unit of measuring the length of pencil is cm.
Litres.
A kilometre.
Poise is a measuring unit of Viscosity.
A kilogram is a unit of measuring weight.
Miles or Kilometers
metermeter
a) The use of a common measuring system makes it easier for people from different countries to communicate with each other. b) The use of a common measuring system means a maesurement in that unit has the same value anywhere in the world.
For measuring WHAT?
The basic unit is a cubic metre but, since this is rather large, a more common unit is a litre = 0.001 metre3.
A metre would be the most appropriate unit.