Nova Measuring Instruments Ltd. announced that it is reaffirming its earnings guidance for the fourth quarter of 2012. For the quarter, the company expects revenues of $18.5 to $22 million, with diluted earnings per share of $0.01 to $0.10 on a GAAP basis, and diluted earnings per share of $0.00 to $0.08 on a Non-GAAP basis.