Burn an Inch
The hook at the end of a tape measure is designed to slip in and out a little. That movement compensates for the thickness of the hook, depending on whether you’re taking inside or outside measurements. But a bent hook or worn rivets can lead to inaccuracy. So when you need precision, bypass hook-related errors by holding the tape at the 1-in. mark and making your mark exactly 1 in. beyond the desired measurement.
Check out these 25 Handy Measuring Hacks All DIYers Should Know.