Compressor variable angle measurement system

A compressor variable angle measurement system for guiding the positioning of a variable vane supported on a penny of a compressor of a gas turbine engine, the compressor variable angle measurement system comprising

• a gauge assembly that is connectable to a computing device;
• the gauge assembly comprises:
• a baseplate that has a first section and a second section, the first section having a plurality of edge contact pins, a plurality of 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 variable vane;
• and
• a clamp arm that is pivotally attached to the baseplate and has a first section that has a vane contact portion, the first section of the clamp arm being spring urged towards the first section of the baseplate;
• the gauge assembly being configured to removably grip the variable vane between the plurality of vane contact portions of the baseplate and the vane contact portion of the clamp arm and on the plurality of edge contact pins of the baseplate, a 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.