What tool is used to measure duct dimensions for fabrication?

The measuring tape is the most commonly used tool for measuring duct dimensions in HVAC sheet metal fabrication. It offers the flexibility and length needed to measure both short and long distances accurately. Measuring tapes are especially useful in construction environments where duct sizes can vary significantly, and they can easily be maneuvered around the installed structures to obtain precise measurements.

While a level is essential for ensuring that ductwork is installed properly and is aligned correctly, it does not provide measurement of dimensions. A laser measure can offer quick distance measurements and is convenient for certain applications, but it may not always be as versatile or standard for the specific requirements of duct fabrication, especially in tight or obstructed spaces. Calipers are typically used for smaller, more precise measurements and are not suited for the broader dimensions typically encountered in ductwork.

Therefore, the measuring tape is the best tool for this purpose, as it combines practicality with ease of use in a variety of settings.