TN/SC Jr. Member Joined Jun 13, 2012 Messages 61 Reaction score 73 Golden Thread 0 Location SC Detector(s) used CTX 3030 Primary Interest: All Treasure Hunting Jan 28, 2015 #1 threads in small opening, no markings. Thanks for looking Attachments brass.webp 117.1 KB · Views: 104 brass1.webp 48.2 KB · Views: 99 brass2.webp 22 KB · Views: 95
tamrock Platinum Member Joined Jan 16, 2013 Messages 16,407 Reaction score 34,878 Golden Thread 0 Location Colorado Detector(s) used Bounty Hunter Tracker IV Primary Interest: All Treasure Hunting Jan 28, 2015 #2 Piece of an old steam whistle We had small ones of that size on an pneumatic mining machine in the 70s for an alert whistle. It would tweet very loud over all the other noise the machine made. It just worked off the air pressure instead of steam. Attachments steam whistle.webp 4 KB · Views: 135 Last edited: Jan 28, 2015 Upvote 0
Piece of an old steam whistle We had small ones of that size on an pneumatic mining machine in the 70s for an alert whistle. It would tweet very loud over all the other noise the machine made. It just worked off the air pressure instead of steam.
We had small ones of that size on an pneumatic mining machine in the 70s for an alert whistle. It would tweet very loud over all the other noise the machine made. It just worked off the air pressure instead of steam.
