Tornado rescue whistle
Manufactured by Acme Whistles

“An emergency whistle used by mountain rescue. Its design has no ball inside allowing it to work on land and in wet or sub-zero conditions. Unlike metal, the plastic stops lips from sticking to it in the cold. It is shatter-proof, ultralight, has a loud high pitched sound for little effort and is easy to find due to its dayglow plastic. It is also available in glow in the dark plastic and has a brass keyring that does not rust.”

Jeffery Lambert