Mitutoyo 516-402-26 Gage Block Set 81 Pc Steel

Product Description

The MITUTOYO 516-402-26 is an 81-piece steel gage block set covering a measurement range of 0.05 to 4 inches. These precision ground blocks are used to establish, transfer, and verify dimensional measurements in machining, inspection, and calibration environments. The set conforms to ASME B89.1.9-2002 and carries Accuracy Grade 0, placing it among the highest accuracy classes for workshop and laboratory use. Each block is individually serialized, and the set ships with an inspection certificate, supporting traceability requirements in quality-controlled environments. The included wooden case provides organized storage and protects the blocks from damage between uses.

This gage block set is suited for tool rooms, metrology labs, and production inspection stations in industrial and manufacturing settings. It supports applications requiring precise length standards, including surface plate work, machine tool setup, comparator calibration, and go/no-go gauge verification. The step increments of 0.0001 inch, 0.001 inch, 0.05 inch, and 1.000 inch allow technicians to wring together a wide range of target dimensions from a single set. Licensed metrologists, quality technicians, and precision machinists are the primary users.

Key Features

• 81-piece steel set spanning 0.05 to 4 inches in measurement range
• Accuracy Grade 0 per ASME B89.1.9-2002, suitable for lab and precision inspection use
• Tolerance bands: 5 micro inches (0.05-0.4 inch range), 6 micro inches (0.45-1 inch range), 8 micro inches (2 inch), 10 micro inches (3 inch), 12 micro inches (4 inch)
• Step increments of 0.0001 inch (49 blocks), 0.001 inch (19 blocks), 0.05 inch (5 blocks), and 1.000 inch (4 blocks) for flexible combination wringing
• Individually serialized blocks for traceability and quality documentation
• Includes inspection certificate and wooden storage case

Compatibility

Designed as a general-purpose precision reference standard compatible with surface plate inspection setups, height gauges, snap gauges, and comparator instruments that accept wrung gage block stacks conforming to ASME B89.1.9-2002.

Installation Notes

Gage blocks should be handled and stored by a qualified metrologist or precision measurement technician following established wringing procedures to avoid burrs, corrosion, or dimensional distortion. Blocks must be cleaned of oil and debris before wringing and returned to the case after use to prevent surface damage. Do not use these blocks as structural supports or drop-test fixtures. Temperature stabilization to 68 degrees F (20 degrees C) is standard practice before taking reference measurements, per ASME and ISO metrology guidelines.