Emergency whistles

thingiverse

Emergency Whistle in Four Variations Four types of emergency whistle available - small one-tone, large one-tone, small two-tone, and big two-tone designs. High-volume output is loud and crystal clear. It's easy to print directly without requiring any external supports. This whistle features a keyring hole allowing you to attach it as a keychain accessory for added convenience. Technical Print Details Print Settings Rafts None Required