Reference letter from ABB-DLI

To whom it may concern;

DLI Engineering is pleased to provide this reference for Crystal Instruments Corporation, our long term business partner.

In 1995 and 1996, DLI evaluated signal processing technology from several vendors. We found that the technology of Crystal Instruments is leading the test and measurement industry and offers efficient, function-rich computation algorithms, power management and robustness. DLI selected CI to develop and provide DSP (Digital Signal Processing) technology in a PCMCIA card format. DLI has used the devices provided by CI and technology licensed from CI in several of our vibration monitoring product lines. We have installed hundreds of systems in industrial facilities throughout the world. In addition to local applications, DLI receives data from these devices on over 30,000 machines per year, including data from machinery aboard commercial and US Navy ships.

DLI Engineering, a subsidiary of ABB, has been a pioneer in Predictive Maintenance and Machinery Condition Assessment based on vibration analysis. For more than 31 years, DLI has developed, implemented and supported the largest and most successful condition monitoring programs in the world... DLI uses the simultaneous four channel signal acquisition and processing technology from CI as a key component in the DLI automated vibration diagnostic systems.

In the past 10 years DLI has also benefited from excellent technical support from Crystal Instruments.Without reservation, we would recommend Crystal Instruments as both a supplier of high-tech designs and products, and as cooperative and supportive business partner.

Sincerely,

President
DLI Engineering Corporation
Corporate Office | 253 Winslow Way West | Bainbridge Island, WA 98110
Phone: 206-842-7656 x1030
FAX: 206-842-7667
www.DLIengineering.com