RS 9.MA1 Mini-Metric Rect angular Steel Gage Block Set This mini-metric set of precision gage blocks calibrates micrometers, vernier gages and similar measuring tools.The gage blocks are also useful as setting masters for comparator-type dimensional gages and are useful in teaching the basics of metric measurement. The set has a capacity of 61mm in 1, 0.5mm or 0.25mm steps. Its nine hardened steel blocks include these sizes: 1, 2, 2.25, 2.5, 3, 5, 10, 15 and 25mm.They are finished to B89.1.9 Accuracy Grade 0 and are furnished in a lined metal case. Metric rectangular 88 piece and square 112 sets are shown Metric System Gage Block Sets, Individual Blocks and Accessories The following pages include these metric system items in the order shown: Metric set RS 9.MA1 Rectangular gage blocks and accessories Square gage blocks and accessories Gage Block Sets 391 S t arrett -W ebber G age B locks