Brass Steam Whistle
The brass whistle is 3" in diameter, 12" long (to top of acorn), with a 7" long S-curved iron valve lever. The valve and whistle are in good working condition. The brass has a dark patina. The single tone whistle emits 90 decibels at 630cps (with 100 psi of air and microphone 3 feet from whistle). The central bolt has been welded, but doesn't show unless the unit is disassembled and doesn't affect its function.
sound with 50 psi air
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