Abstract: A portable gaging system is used to measure a seal gap for a vehicle door or decklid. The gaging system includes gage assemblies that are removably mounted on a door or decklid flange. The gages are spaced apart from one another about the perimeter of the door or decklid to simultaneously measure the seal gap at various locations. A probe member is supported on each of the gaging assemblies and is selectively moveable between a rest position and an actuated position by the vehicle door as the door is moved from an open to a closed position. Each of the gage assemblies has a sensor for producing an electronic signal representative of gap size based upon movement of the probe member. A portable processor unit receives and stores the electronic signals produced by each of the gage assemblies. A remote actuator is used to generate an activation signal to initiate the gap measurements.