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The 12410 Concave Series of tips are designed to work with the Brunson Invar System.  On one end, a 3/8" x 24 external thread mates to our standard Invar system tubing.  The other end provides a concave mount that is made to fit on a 1/2" tooling ball, while holding the effective length to a precisely known standard (see drawing and table below).  The concave tips allow you to take measurements from tooling ball fiducials permanentely mounted on fixtures, and perform "leapfrogging" measurements using a tooling ball placed temporarily between points of measurement or alignment interest.

The 12410 Concave tip does not come in a metric equivalent, but is available in two different effective lengths in English units (see table & drawing below).

Order desired item by part number from the table below.  You can read more about other Invar System Components on this website.

Part number Effective Length* 12410-G2 1" ±0.0003" 12410-G3 2" ±0.0003" [*Effective length is the distance from the bottom interface surface of the tip, which mates to the end of the Invar tubing, to the center of a 1/2" tooling ball when cradling the ball with the tip's concave surface.]