A tape measure comes with several markings that some may not know, like the black diamonds. Here's what those symbols mean ...

If you have ever used a tape measure, you may have noticed a little hole or slot on the end of it. We'll tell you what that ...

Known as joist marks, these diamonds indicate the standard ... A user on Reddit shed light on their purpose: "The black diamond on a tape measure is a symbol that represents the centre area ...

These marks on your tape measure also referred to as 'joist marks', correspond to the standard intervals between joists. An individual offered an explanation on Reddit, stating: "The black diamond ...