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Fig. 17. [[image - drawing of the cylindrical tank: a six foot length of 12-inch steel pipe, with threaded caps on the ends]]

Fig. 18. [[image - black & white photograph of the Cylindrical tank]]

Fig. 19. [[image - black & white photograph of the circular tank: pieces of 3-inch pipe welded into a circular shape.]]

Fig. 20. [[image - cross section drawing of the direct-lift Impulse-meter]]