private void AddToAxisCollection(List<AxisHelper> newAxisHelpers, int ID, string descr, string units, double correction, double offset)
{
if (ID == 0) return;
foreach (AxisHelper ah in newAxisHelpers)
{
if (ah.AxisID == ID) return;
}
AxisHelper ahnew = new AxisHelper();
ahnew.AxisID = ID;
ahnew.Description = descr;
ahnew.Units = units;
ahnew.Correction = correction;
ahnew.Offset = offset;
newAxisHelpers.Add(ahnew);
}