Reflecting differently

Adapter.cs

public class FARAdapter : Adapter
      {
          private PropertyInfo instanceProp;

          private FieldInfo machNumberField;
          private FieldInfo qField;

         public override void Plugin()
         {
            Type type = GetType("ferram4.FARControlSys");
            if (type != null)
            {
                instanceProp = type.GetProperty ("ActiveControlSys", BindingFlags.Static | BindingFlags.Public);

                machNumberField = type.GetField ("MachNumber", BindingFlags.Instance | BindingFlags.Public);
                qField = type.GetField ("q", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
                // non-public now, but going to be public in next release, per conversation with ferram.

               SetInstalled (true);
            }
         }

         public double GetMachNumber()
         {
            if(IsInstalled())
            {
                object farControlSys = instanceProp.GetValue (null, null);

                if (farControlSys != null)
                    return (double) machNumberField.GetValue (farControlSys);
            }

            return 0.0;
         }

         public double GetQ ()
         {
             if (IsInstalled ())
             {
                 object farControlSys = instanceProp.GetValue (null, null);

                 if (farControlSys != null)
                    return (double)qField.GetValue (farControlSys);
             }

             return 0.0;
         }
      }