public virtual double ConversionFactor {get;}

{
  try
  {
    // create a Grad unit
    var grad = AngularUnit.CreateAngularUnit(9105);
    string unitName = grad.Name;                        // Grad
    double conversionFactor = grad.ConversionFactor;    // 0.015708
    double radiansPerUnit = grad.RadiansPerUnit;
    int factoryCode = grad.FactoryCode;                 // 9105

    // convert 10 grads to degrees
    double val = grad.ConvertTo(10, AngularUnit.Degrees);

    // convert 10 radians to grads
    val = grad.ConvertFromRadians(10);
  }
  catch (ArgumentException)
  {
    // ArgumentException will be thrown by CreateAngularUnit in
    // the following scenarios:
    // - if the factory code used is a non-angular factory code
    //   (i.e. it corresponds to square meters which is an area unit code)
    // - if the factory code used is invalid
    //   (i.e. it is negative or doesn't correspond to any factory code)
  }

}

{
  try
  {
    // create a british 1936 foot
    var britFoot = LinearUnit.CreateLinearUnit(9095);
    string unitName = britFoot.Name;                        //  "Foot_British_1936"
    double conversionFactor = britFoot.ConversionFactor;    // 0.3048007491
    double metersPerUnit = britFoot.MetersPerUnit;
    int factoryCode = britFoot.FactoryCode;                 // 9095

    // convert 10 british 1936 feet to centimeters
    double val = britFoot.ConvertTo(10, LinearUnit.Centimeters);

    // convert 10 m to british 1936 feet
    val = britFoot.ConvertFromMeters(10);
  }
  catch (ArgumentException)
  {
    // ArgumentException will be thrown by CreateLinearUnit
    // in the following scenarios:
    // - if the factory code used is a non-linear factory code
    //   (i.e. it corresponds to square meters which is an area unit code)
    // - if the factory code used is invalid
    //   (i.e. it is negative or doesn't correspond to any factory code)
  }

}

{
  // create a custom linear unit - there are 0.33 meters per myLinearUnit
  var myLinearUnit = LinearUnit.CreateLinearUnit("myCustomLinearUnit", 0.33);
  string name = myLinearUnit.Name;                          // myCustomLinearUnit
  double convFactor = myLinearUnit.ConversionFactor;        // 0.33
  int code = myLinearUnit.FactoryCode;                      // 0 for custom units
  double metersUnit = myLinearUnit.MetersPerUnit;           // 0.33
  string toString = myLinearUnit.ToString();                // same as Name - myCustomLinearUnit

  // convert 10 centimeters to myLinearUnit 
  double convertedVal = LinearUnit.Centimeters.ConvertTo(10, myLinearUnit);

  // get the wkt
  string lu_wkt = myLinearUnit.Wkt;

  // create an angular unit from this wkt
  var anotherLinearUnit = LinearUnit.CreateLinearUnit(lu_wkt);
  // anotherLinearUnit.ConversionFactor = 0.33
  // anotherLinearUnit.FactoryCode = 0    
  // anotherLinearUnit.MetersPerUnit = 0.33
}