AS 2128-1978, is the Progress certificate for use with General Conditions of tendering and Form of tender for lump sum contracts 1978 edition. This copy contains 45 copies of the Form for use together with AS 2124-1978. AS 2124 and related Standards are a set of General Conditions of Contract documents suitable for all types of civil, building, electrical and mechanical plant contracting work. Originally sold in a package of: AS 2124-1978, General conditions of contract; AS 2125-1978, General Conditions of Tendering and Form of tender for lump sum contracts; AS 2126-1978, Form of tender for Schedule of rates contracts; AS 2127-1978, Form of Formal instrument of agreement; and AS 2128-1978, Progress certificate (this Standard).