Pour Check™ The Pour Check™ is an accurate, inexpensive tool that will help perfect the skill of free pouring. The Pour Check™ separates into 2 high quality pieces of plastic, the funnel and the measuring tube. It measures in both US Ounces and Milliliters. The Pour Check™ is an all-in-one tool that saves time while measuring the initial pour. Your purchase includes a set of a 6 Pour Check Units.