Measure twice, cut once. That's the old adage. Although with a Zircon Sonic Measure, you'll want to measure all day long, because it's now easier than ever. As its name suggests, the Sonic Measure bounces sound waves off distant surfaces to gauge the distance as if it had a tiny bat or dolphin built in. A laser targetter also helps you to ensure that you're taking the reading from the correct spot. Once you've taken your readings, the Sonic Measure can be used to calculate areas and volumes automatically, and it can store measurements so you can note them down later. Just don't clap when you use it.