Dual Center Finder For Pipes

This is a prototype to find the opposite points to make holes in a pipe.

The pipe can be from 16 mm to 60 mm in diameter.

In order to maintain the parallelism between the two pieces, a 26.5 mm wide x 0.8 mm thick metal ruler was used.

Is a bit difficult the first time you insert the ruler, put a little grease on the guides and the ruler. With a little use, it slides easily.

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Permi