The Mitutoyo 516-947-26 rectangular steel gauge block set has the following specifications:
? Number of Blocks: 87 Pieces
? Grade: AS-1
? Material: Steel

The 87 Piece Rectangular Gauge Block Set is made up of the following blocks:
? 9 Blocks: 1.001-1.009mm (.001mm)
? 49 Blocks: 1.01-1.49 (.01mm)
? 19 Blocks: 0.5-9.5mm (.5mm)
? 10 Blocks: 10-100mm (10mm)

Features:
Rectangular gauge block sets are supplied with a Mitutoyo certificate of inspection that the block meets American Society of Mechanical Engineers (ASME) B89.1.9-2002 standard for flatness, length, parallelism, and surface finish
High-carbon, high-chrome steel provides high hardness and wear resistance
Rectangular base for accurate wringing
Nominal length indicated with laser-etched, black characters
Identification number etched in block for traceability

A rectangular gauge block can retain stable orientation both longitudinally and laterally. A wide range of application measurements can be made, including cutting tool positioning, angle measurement using a sign bar, taper measuring with a roller, and inspection of depth micrometers.