FieldSpec 4, LabSpec 4, TerraSpec 4 manual addendum

Products: 

ASD range,   ASD TerraSpec 4 Hi-Res,   ASD TerraSpec 4 Standard-Res,   ASD LabSpec 4 Bench,   ASD LabSpec 4 Hi-Res,   ASD LabSpec 4 Standard-Res,   ASD FieldSpec 4 Hi-Res,   ASD FieldSpec 4 Hi-Res NG,   ASD FieldSpec 4 Standard-Res,   ASD FieldSpec 4 Wide-Res,   ASD QualitySpec range,   ASD LabSpec range,   ASD FieldSpec range