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Abstract
A simple, economic, portable, rugged, reliable and flexible device is described, in which ultrasonic therapeutic exposure may be measured by strain gauges on a cantilever arm attached to a target which is deflected by the ultrasonic radiation force. With the specific design described, measurements may be made over the range from about 50 m W to 30 W. Detailed design considerations are presented indicating the ways of extending the range and accuracy of the device. The particular advantages of the device described are several, including the relative ease of providing a direct digital display of the ultrasonic power.