COMPRESSOR VARIABLE ANGLE MEASUREMENT SYSTEM

A compressor variable angle measurement system for guiding the positioning variable vanes supported on a penny of a compressor of a gas turbine engine. The system comprising a gauge assembly that is connectable to a computing device the gauge assembly comprises a base plate and a clamp arm. The baseplate has a first section and a second section, the first section having a first trailing edge vane engaging portion, a second trailing edge vane engaging portion, at least three vane contact portions, and a radial setting pin, the second section having an inertial measurement unit, the radial setting pin being configured to contact the penny that supports the vane. The clamp arm is pivotally attached to the baseplate and has a first section that has at least one vane contact portion, the first section of the clamp arm being spring urged towards the first section of the baseplate. The gauge assembly is configured to removably grip a variable vane between the vane contact portions of the baseplate and the at least one vane contact portion of the clamp arm and on the leading edge vane engaging portion and the trailing edge vane engaging portion of the base plate, the stagger angle of the variable vane with respect to the radial setting pin being determined by the computing device from measurements made by the inertial measurement unit.