Suburban Tool B-123-NHM Matched Pair 1x2x3 in No Holes 1-2-3 Blocks

The Suburban Tool B-123-NHM is a new, matched pair of precision 1-2-3 blocks (1 in × 2 in × 3 in) with no holes, manufactured in Auburn Hills, Michigan, USA. These blocks are ground from hardened steel to tight tolerances across all six faces, with all faces mutually square and parallel; the "NHM" suffix designates No Holes, Matched pair — meaning both blocks are verified and certified together as a set (serial #542 visible), making them interchangeable without introducing stacking errors. The blocks are supplied in a fitted wooden storage case with a quality-control certified stamp and are suited for workholding, part setup, sine bar support, surface plate layout, and machine tool tramming applications where consistent, hole-free reference surfaces are required. Each block's ground surfaces provide a reliable reference datum for inspection, milling, grinding, and fixture-building operations.

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