Calliope Pipe Tuning Plug Jacks
Description
Tuning Plug Jacks (Adjuster Knobs) used for tuning my version of the Dec 1982 Popular Mechanics Mini-Calliope. Mini-Calliope Part 6 - Pipe Tuning Plugs & Jacks https://youtu.be/4U84IxTTqpM Knobs are designed to fit inside 1", 7/8", 3/4" & 5/8" diameter 1/16" wall thickness aluminum pipe. The 1" & 7/8" adjuster are threaded for 5/16-18 threaded rod. The 3/4" * 5/8" are threaded for 1/4-20 threaded rod. The two End Knobs are threaded for 5/16-18 and 1/4-20 threaded rod.
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