Description
The MITUTOYO 614171-531 is a square steel gage block measuring 0.131 inches, manufactured to Grade 0 accuracy and supplied with a Certificate of Inspection. Gage blocks are precision-ground reference standards used to calibrate measuring instruments, set comparators, and verify dimensional tolerances on the shop floor or in a metrology lab. This block meets ASME standards, making it suitable for quality-controlled environments where traceable dimensional references are required. Machinists, metrologists, and quality technicians rely on Grade 0 blocks when tight tolerance verification is critical.
This gage block is suited for dimensional inspection tasks in machine shops, tool rooms, and quality labs. It serves as a master reference for calibrating micrometers, height gages, and other precision measuring instruments. The square geometry provides consistent wringing surfaces on all four sides, giving technicians flexibility when building gage block stacks or setting up inspection fixtures.
Key Features
- Grade 0 accuracy per ASME standards for high-precision dimensional reference
- 0.131-inch nominal size with five-decimal precision
- Square steel construction provides four usable wringing surfaces
- Includes Certificate of Inspection for traceability documentation
- Steel material offers durability and resistance to wear during repeated use
Compatibility
Designed as an OEM-style gage block for use in standard gage block sets and inspection setups requiring ASME-compliant Grade 0 steel reference blocks.
Installation Notes
Gage blocks are handled and stored by metrology technicians and quality control professionals. Before use, clean all wringing surfaces with a lint-free cloth and approved gage cleaning solution to remove oils and debris. Store blocks in their protective case when not in use to prevent corrosion and surface damage. Do not drop or stack blocks carelessly, as impact damage will compromise calibration accuracy.
Technical Specifications
- Accuracy Grade: Grade 0
- Size (Decimal Inch): 0.13100 inches
- Overall Length: 0.131 inches
- Material: Steel
- Shape: Square
- Standards: ASME
- Weight: 1 pound
Standard Information
- Brand: MITUTOYO
- Manufacturer Part Number: 614171-531









