Side two of the “Integrity Triangle” is to utilize properly calibrated toolkits, matched to the proper connectors. There is a reason for stressing this. The face of the connector is controlled by Mil Spec 39012. Theoretically, all manufacturers of BNC’s should build their interface to meet this standard. However, even if they do, this specification controls only the interface dimensions. This does make it possible for the various BNC manufacturer’s connectors to mate with each other, but that is all. The issue is that the back end of the connector is not controlled. Consequently, no standard has been developed on strip dimensions and tolerances. Each manufacturer has its own. This means that if the manufacturer’s tooling is not used, it is possible that the connector is not being crimped correctly and this jeopardizes circuit integrity. Sometimes the circuit works at first, but fails later on, a recipe for big trouble. It is absolutely imperative that the tools are calibrated and matched to the manufacturer’s connector being used.