What feature distinguishes an add tape?

An add tape is specifically designed with a unique feature that provides an extra graduated foot beyond the zero mark. This additional graduation allows for easier measurements starting from the very beginning of the tape without the ambiguity that may arise when measuring from the zero point.

The presence of this extra graduated foot is particularly useful in surveying and construction applications, as it helps to ensure that the measurements are accurate and that there is a clear indication of length right from the initial point of measurement. This design consideration aids surveyors in making more precise measurements, especially in scenarios where space is limited or precise control over the starting point is necessary.

Recognizing this practical aspect can help in understanding why an add tape is favored for specific surveying tasks compared to standard measuring tapes, which typically do not have this added feature.