Sigma Brand Store › Sigma Front Measure From 410-0-410mm+19N Image 1 of 1 Sigma Front Measure From 410-0-410mm+19N £36.00 500mm Extension for adjustable metric bar fixable at the right or left end.Compatable with all Sigma Series 4 Tile Cutters. Quantity: Add To Cart Added! 500mm Extension for adjustable metric bar fixable at the right or left end.Compatable with all Sigma Series 4 Tile Cutters.