98V53509004000 is a precision aviation maintenance tool compliant with AS9100D quality standards and FAA/EASA regulations, dedicated to aircraft engine turbine and compressor blade maintenance.It functions as a high-precision blade thickness gauge, specialized in dimensional inspection of turbine and compressor blade airfoils during MRO checks. It accurately measures blade thickness at key positions against strict aviation tolerances, detects wear, erosion, corrosion or thermal deformation timely, ensures consistent aerodynamic profile, prevents airflow disturbance and engine efficiency loss, and avoids fatigue fracture risks of blades under high-speed rotation and high-temperature conditions.Made of high-strength wear-resistant stainless steel, it resists high temperature and mechanical abrasion, working stably at -55℃ to 360℃. Weighing 0.32kg, it features calibrated measuring probes, clear graduation and ergonomic design for easy operation, delivering accurate and repeatable results. It is a critical tool to guarantee blade structural integrity and overall engine operational safety, efficiency and service life.