Checking fixtures work as a support for measuring, simulating the part fixation in the vehicle, without violating its integrity on removal. They mimic the car surroundings, allowing the measurement of Gap and Flush. The use of digital measurement systems - dial indicators - immediately shows existing deviations to ensure the part is within the required dimensional or positioning tolerances. These devices are common in metrology labs, and are subject to statistical treatment, as the R&R study.
Measuring Fixtures: Used to support parts for CMM measurement. Cubings: Control fixtures where all surrounding areas are faithfully reproduced. Welding brackets: They hold and locate the metal parts for automated welding. Sliding systems, with pneumatic opening, are used to decrease cycle time.