We've been home brewing for more than ten years. We switched over to kegging our beers several years ago to save time and to have readily available beer on tap. After a couple of our kegs blew unexpectedly, and at inopportune times, we realized we needed a level indicator for our kegs. We searched around and found very few functional options besides expensive load cells and flow meters. We knew that there needed to be a simple and functional solution to the problem so we decided to invent and patent the product. We spent more than a year designing prototypes and testing different configurations until we hit on one that worked for all Cornelius style kegs.We hope you enjoy your Ball and Keg. Never be surprised again!