Diversified industrial manufacturer Illinois Tool Works Inc., Glenview, IL, reported sales in many North American end markets continue to be weak.   ; Sales for the quarter ended April 30, 2007, increased 15%. That included a 10% increase from acquisitions (minus divestitures), 2% growth from base revenues, and 3% from translation and other items.   ; Sales in Engineered Products/North America were down 2% from the same period a year ago; Engineered Products/International sales were up 27%. Specialty Systems/North America sales were up 9%; Specialty Systems/International sales were up 21%.   ; ITW is a $14.1 billion diversified manufacturer of highly engineered components and industrial systems and consumables. The company has 750 business units in 49 countries.