All supported measurement types are listed below, each with an example of the standard usage for such measurements.
Table 119. List of measurement types
Typ  Class  Standardunit  Description 

Acceleration  Zend_Measure_Acceleration  Meter per square second  m/s²

Zend_Measure_Acceleration covers the
physical factor of acceleration.

Angle  Zend_Measure_Angle  Radiant  rad

Zend_Measure_Angle covers angular dimensions.

Area  Zend_Measure_Area  Square meter  m²

Zend_Measure_Area covers square measures. 
Binary  Zend_Measure_Binary  Byte  b

Zend_Measure_Binary covers binary conversions.

Capacitance  Zend_Measure_Capacitance  Farad  F

Zend_Measure_Capacitance covers physical factor of
capacitance.

Cooking volumes  Zend_Measure_Cooking_Volume  Cubic meter  m³

Zend_Measure_Cooking_Volume covers volumes
which are used for cooking or written in cookbooks.

Cooking weights  Zend_Measure_Cooking_Weight  Gram  g

Zend_Measure_Cooking_Weight covers the weights
which are used for cooking or written in cookbooks.

Current  Zend_Measure_Current  Ampere  A

Zend_Measure_Current covers the physical factor of
current.

Density  Zend_Measure_Density  Kilogram per cubic meter  kg/m³

Zend_Measure_Density covers the physical factor of
density.

Energy  Zend_Measure_Energy  Joule  J

Zend_Measure_Energy covers the physical factor of
energy.

Force  Zend_Measure_Force  Newton  N

Zend_Measure_Force covers the physical factor of
force.

Flow (mass)  Zend_Measure_Flow_Mass  Kilogram per second  kg/s

Zend_Measure_Flow_Mass covers the physical factor of
flow rate. The weight of the flowing mass is used as reference point within
this class.

Flow (mole)  Zend_Measure_Flow_Mole  Mole per second  mol/s

Zend_Measure_Flow_Mole covers the physical factor of
flow rate. The density of the flowing mass is used as reference point within
this class.

Flow (volume)  Zend_Measure_Flow_Volume  Cubic meter per second  m³/s

Zend_Measure_Flow_Volume covers the physical factor
of flow rate. The volume of the flowing mass is used as reference point
within this class.

Frequency  Zend_Measure_Frequency  Hertz  Hz

Zend_Measure_Frequency covers the physical factor of
frequency.

Illumination  Zend_Measure_Illumination  Lux  lx

Zend_Measure_Illumination covers the physical factor
of light density.

Length  Zend_Measure_Length  Meter  m

Zend_Measure_Length covers the physical factor of
length.

Lightness  Zend_Measure_Lightness  Candela per square meter  cd/m²

Zend_Measure_Ligntness covers the physical factor of
light energy.

Number  Zend_Measure_Number  Decimal  (10)

Zend_Measure_Number converts between number formats.

Power  Zend_Measure_Power  Watt  W

Zend_Measure_Power covers the physical factor of
power.

Pressure  Zend_Measure_Pressure  Newton per square meter  N/m²

Zend_Measure_Pressure covers the physical factor of
pressure.

Speed  Zend_Measure_Speed  Meter per second  m/s

Zend_Measure_Speed covers the physical factor of
speed.

Temperature  Zend_Measure_Temperature  Kelvin  K

Zend_Measure_Temperature covers the physical factor
of temperature.

Time  Zend_Measure_Time  Second  s

Zend_Measure_Time covers the physical factor of time.

Torque  Zend_Measure_Torque  Newton meter  Nm

Zend_Measure_Torque covers the physical factor of
torque.

Viscosity (dynamic)  Zend_Measure_Viscosity_Dynamic  Kilogram per meter second  kg/ms

Zend_Measure_Viscosity_Dynamic covers the physical
factor of viscosity. The weight of the fluid is used as reference point
within this class.

Viscosity (kinematic)  Zend_Measure_Viscosity_Kinematic  Square meter per second  m²/s

Zend_Measure_Viscosity_Kinematic covers the physical
factor of viscosity. The distance of the flown fluid is used as reference
point within this class.

Volume  Zend_Measure_Volume  Cubic meter  m³

Zend_Measure_Volume covers the physical factor of
volume (content).

Weight  Zend_Measure_Weight  Kilogram  kg

Zend_Measure_Weight covers the physical factor of
weight.
