Accurate and reproducible determination of compression is essential to effective therapy. Pressures that are too high can have a tourniquet effect, blocking the outflow of lymphatic and venous circulation, forcing fluid into the tissue. Pressures that are too low will have little or no effect. To overcome these problems, we have developed the Precise Gauge (U.S. Patent 5,904,145) for use with the ReidSleeve. The optimal compression can be determined by a simple procedure, assuring the patient of the best possible results.