TN/SC Jr. Member Joined Jun 13, 2012 Messages 60 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 Amazon Forum Fav 👍 Minelab PRO-FIND 35 Waterproof Pinpointer Metal Detector for Experts with Tone ID & Adjustable Sensitivity - Grab it through Amazon! Attachments brass.webp 117.1 KB · Views: 87 brass1.webp 48.2 KB · Views: 83 brass2.webp 22 KB · Views: 87
threads in small opening, no markings. Thanks for looking Amazon Forum Fav 👍 Minelab PRO-FIND 35 Waterproof Pinpointer Metal Detector for Experts with Tone ID & Adjustable Sensitivity - Grab it through Amazon!
tamrock Platinum Member Joined Jan 16, 2013 Messages 15,865 Reaction score 32,719 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: 128 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.