The workforce of skilled construction craftworkers in the United States is both shrinking, and aging, largely due to a lack of interest from young people to enter the industry. These trends have negatively impacted construction project productivity for several decades, and now, more than ever, innovative methods are needed to improve construction productivity. This research posits that productivity improvements could be realized through incremental improvements to traditional 2D construction drawings, the industry standard engineering information deliverable that has seen very little change in well over a century. Given the widespread use and familiarity of 2D construction drawings, any improvements to the format or to the use of the format could have immediate, major impacts on industry-level productivity. To that end, this research used eye tracking technology to investigate how professional pipefitters interacted with 2D drawings during a pipe model assembly task.