Meritus (Barnet) 10KVA to 100KVA Spot Welders Models P.S.40,  P.S.20.A.2,  A.S.A.10.A,  A.S.A.20.A,  A.S.A.40.A,  A.S.A.60.A,  R.P.S.15.A,  P.S.5.B and P.S.6.B: A pack of 4 manuals with Operating and Servicing details, electrical diagrams, some sectional drawings and a catalogue