A group of four black pipe whistles with fipples of 1 1/4 x 1/8 flatstock and windways of 1/4 black pipe. The 1/2 whistle is 12 inches long with a slide made of a rubber grommet on a 1/4 rod. A 3/4 whistle is 8 inches long and regulated by a ball valve. Another 3/4 whistle is 14 inches long with a slide made of a rubber grommet on 1/4 rod. The 1 inch whistle is 15 inches long with a slide made of a neoprene washer on 3/8 rod. The windways are joined in pairs by 3/8 plastic tubing and tees made of 1/4 pipe allowing the whistles to be played simultaneously.
Full view of Furtwangler
Detail of Furtwangler
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