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whistle for backpack strap 15/20mm (3 versions)
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A whistle that can be mounted on a 15mm or 20mm backpack strap.
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Model information
- Source
- Printables
- Category
- Outdoor Sports
- License
- Creative Commons — Attribution — Noncommercial
This is an emergency whistle for a backpack strap. There is a 15mm version and a 20mm version available. Each includes a SOS Morse code version, an ultralight version, and an empty version. I used PLA in dynamic quality for printing.