Industrial chimneys are critical pieces of infrastructure, which cost refineries, factories, and other industrial sites millions of dollars in downtime during inspections. Traditionally, inspections involve using a boom lift to take the UT inspector to various points across the chimney stack, slowly working through hundreds of test points manually over the course of multiple days. The chimney must be shut down for the duration of the job. This comparison study demonstrates how the Skygauge can save you time and money by conducting the inspection remotely, while the stack remains operational. It demonstrates how our technology is faster, cheaper, and safer than traditional methods.