<p>Fire testing has evolved from early empirical trials to standardised furnace tests on the basis of prescribed time–temperature curves. While these standard methods provide a consistent regulatory framework, they do not accurately represent real fire conditions and often produce significant thermal no uniformity due to variations in furnace design, burner arrangement, and operating characteristics. These inconsistencies limit the repeatability and comparability of fire resistance results, especially as modern materials and construction systems become more complex. This paper reviews two promising approaches aimed at improving the measurement of thermal exposure in fire resistance testing: the plate thermometer (PT) and the transfer rate indicator sensor (H-Tris). The PT offers a more realistic indication of the sample surface temperature, whereas the H-Tris enhances the measurement accuracy by capturing the net heat transfer through a calibrated multilayer sensor. Together, these methods provide meaningful pathways toward achieving more uniform, reliable, and performance-based fire testing.</p>