PRO-DEX, INC. TO PRESENT AT B.RILEY & CO.
ANNUAL INVESTOR CONFERENCE ON AUGUST 11TH

SANTA ANA, CA, July 27, 2005 - PRO-DEX, INC. (NASDAQ: PDEX), a developer and manufacturer of embedded motion control and miniature rotary drive systems, serving the medical, dental, factory automation, and scientific research markets, announced that Patrick Johnson, the Company's President and Chief Executive Officer, will present at the at the B. Riley & Co. New York Investor Conference at 3:15 p.m. (Eastern) on August 11, 2005. The conference is located at the Le Parker Meridien Hotel in New York.
Mr. Johnson will discuss the Company's value proposition, which concentrates on rapid and concurrent product development, enabling PRO-DEX customers, such as Smith & Nephew, Medtronic and Biomet, to accelerate new products to market. Mr. Johnson will discuss the various markets in which PRO-DEX participates, including medical, dental, and factory automation, and will also provide a review of the Company's historic financial results. A webcast of the presentation will be available at www.pro-dex.com or www.brileyco.com .

About the B. Riley Investor Conference
The B. Riley & Co. Annual Investor Conference will feature presentations by 30 companies covering a variety of industries. Institutional investors may register for the conference at www.brileyco.com .

Pro-Dex Inc., with operations in Santa Ana, California and Beaverton, Oregon, specializes in bringing speed to market in the development and manufacture of technology-based solutions that incorporate embedded motion control and miniature rotary drive systems, serving the medical, dental, factory automation, and scientific research markets. Pro-Dex's products are found in hospitals, dental offices, medical engineering labs, scientific research facilities and high tech manufacturing operations around the world.

For more information, visit the Company's website at www.pro-dex.com.

Statements herein concerning the Company's plans, growth and strategies may include 'forward-looking statements' within the context of the federal securities laws. Statements regarding the Company's future events, developments and future performance, as well as management's expectations, beliefs, plans, estimates or projections relating to the future, are forward-looking statements within the meaning of these laws. The Company's actual results may differ materially from those suggested as a result of various factors. Interested parties should refer to the disclosure concerning the operational and business concerns of the Company set forth in the Company's filings with the Securities and Exchange Commission.