From: "Jeffrey Snider" <snide76258@a...> "Jeffrey Snider" <snide76258@a...> Date: Tue Feb 13, 2001 1:04 pm Subject: Re: Trumpet Training Tool
It sounds similar to a device my wife (an asthmatic) has used before. You might try medical supply stores. The original purpose is to measure the amount of air you are getting, not necessarily develop your breathing.