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The Brunson Invar System is a simple system of interconnecting Invar bars and terminating components, most of which are connected together with these removable, threaded plugs as illustrated by the photo below.  (Note that some of the terminating tips in our Invar System have their own built-in connecting plugs.)

These stainless steel connectors come in packages of 10 and have screwdriver slots on both ends for easy insertion and removal.

You can read more about our Invar System Components on this website, and find out why Invar is such a great material to use in metrology.