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<br />DISCHARGE MEASUREMENTS AT GAGING STATIONS <br /> <br />19 <br /> <br /> <br />Figure 27.-Handline. <br /> <br /> <br />Figure 29.-Handline in use: from a bridge. <br /> <br /> <br />Figure 28,-Handline reels, Lee.Au (top) and Morgan <br />(bottom). <br /> <br />Sitdown cable cars have a variety of means <br />of supporting the sounding reel. A-pack and <br />Canfield reels are designed to clamp on the side <br />of the car. (See fig. 40.) Permanent or portable <br />reel seats are attached to the cable cars for <br />larger reels. (See figs. 34 and 36.) <br /> <br />Figure 30.-SonicooSOunding recorder. <br />