CORRECTED: Nanometrics to Announce Third Quarter 2009 Financial Results on October 29, 2009.

MILPITAS, Calif. -- Nanometrics Incorporated (Nasdaq: NANO), a leading supplier of advanced process control metrology systems used primarily in the manufacturing and packaging of semiconductors, solar photovoltaics and high-brightness LEDs, will release its third quarter 2009 financial results after market close on October 29, 2009. A conference call to discuss the results will be held at 4:30 PM ET.

To participate in Nanometrics' Third Quarter 2009 conference call:

Dial-In Number: [phone] / [phone] (Int'l)

Passcode: 32099789

A live webcast of the conference call can be accessed from Nanometrics' website at www.nanometrics.com.

If you are unable to participate during the live conference call, a webcast recording will be made available on Nanometrics' website.

About Nanometrics

Nanometrics is a leader in the design, manufacture and marketing of high-performance process control metrology systems used primarily in the manufacturing of semiconductors, advanced wafer-scale packaging, solar photovoltaics and high-brightness LEDs, as well as by customers in the silicon wafer and data storage industries. Nanometrics standalone and integrated metrology systems measure various thin film properties, critical dimensions, overlay control, topography, and optical, electrical and material properties, including the structural composition of silicon, compound semiconductor and photovoltaic devices, during various steps of the manufacturing process, from front end of line substrate manufacturing through die preparation for advanced packaging. These systems enable device manufacturers to improve yields, increase productivity and lower their manufacturing costs. The company maintains its headquarters in Milpitas, California, with sales and service offices worldwide. Nanometrics is traded on NASDAQ Global Market under the symbol NANO. Nanometrics' website is http://www.nanometrics.com.