AEROSPACE

AlliedSignal to Buy Northrop Grumman Unit: The Morristown, N.J.-based aerospace, automotive and chemicals company said its aerospace unit agreed to buy Northrop Grumman Corp.’s precision products unit. The precision products business, based in Norwood, Mass., makes instruments and systems for military and space use. It had sales of about $56 million in 1994. After a transition period of up to two years, AlliedSignal will move the precision products unit’s operations, possibly to its facilities in Cheshire, Conn. Los Angeles-based Northrop Grumman designs and manufactures military aircraft, weapons and space- and defense-related systems.