Getting accurate with calibration blocks for calipers
If you've ever finished a project only to find the parts don't actually fit together, you know why keeping some calibration blocks for calipers around is a total lifesaver. It's one of those things where you think your tool is fine because it hits zero when it's closed, but that doesn't always mean it's telling the truth at two or four inches. Tools drift, they get dropped, and sometimes they just get tired. Having a physical reference point—something you know is exactly the size it says it is—is the only way to sleep easy knowing your measurements aren't lying to you. ...