The Black & Decker Corp. increased its projections for first quarter net earnings per diluted share to $1.60 “due to better-than-expected sales and operating margin,” a statement reported. The Towson-based multiuse tool and appliance manufacturer also expects to report a 3 percent sales growth for the first quarter of 2007. This results primarily from currency translation and the 2006 acquisition of Vector Products Inc. Last year, the Vector acquisition and foreign currency translation each contributed 2 percent to 2006 fourth-quarter sales.