Which items are typically expected to be used on every job by a pipefitter?

The correct choice identifies essential tools that are fundamental to ensuring accuracy and precision in a pipefitting job. Levels and high-low gauges are critical for aligning and installing pipes correctly, as they help verify the alignment and slope of pipes to ensure proper drainage and flow rates. Using these tools allows pipefitters to maintain industry standards and avoid potential issues caused by misalignment.

Other tool sets could be important in specific situations but are not universally required for every job. Pneumatic tools and welding helmets may be necessary for particular tasks involving heavy lifting or welding, but they do not apply to every pipefitting job. Wrenches and screwdrivers are useful but are often part of a more general tool kit rather than essential items for every job. Protective gloves and helmets are vital for safety but are not categorized under typical job tools; rather, they are considered personal protective equipment (PPE).

By emphasizing the usage of levels and high-low gauges, the correct answer underlines the importance of precision and proper setup in the craft of pipefitting.