Why Measuring Tapes Have Diamonds

The diamonds appear every 19.2 inches (16 × 5 ÷ 4).

This spacing allows builders to plan stud placement, trusses, or joists efficiently.

Instead of counting each 16-inch segment individually, the diamond gives a visual shortcut to multiples of 16 inches, reducing errors and saving time.

Quick Tip

If you’re hanging drywall or building a wall, look for the diamond marking to line up screws or nails perfectly with studs. It’s a simple trick professional carpenters use daily.

In short: the diamonds are spacing guides for studs, designed to make framing and construction faster, easier, and more accurate.