public static LinearUnit CreateLinearUnit( 
   string unitWkt
)

{
  // 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
}