The whistle is very load and can reach approx. Thread type - 1/4" bspt female. Material - Brass.
3 Note Steam Chime Whistle 3" diameter x 11 3/4" tall plays Gresley A4
3 Note Steam Chime Whistle 2" diameter x 10 3/8" tall plays Gresley A4
3 Note Steam Chime Whistle 3" diameter x 9 15/16" tall plays BR standard class 7
3 Note Steam Chime Whistle 2" diameter x 6 5/8" tall
3 Note Steam Chime Whistle 2" diameter x 6" tall
3 Note steam Chime Whistle 1 1/2" diameter x 8 1/8" tall.
