Mitutoyo 614164-531 0.124 in ASME Grade 0 Steel Gauge Block
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This is a new Mitutoyo 614164-531 individual steel gauge block with a nominal length of 0.124 inches, manufactured to ASME Grade 0 (the highest ASME accuracy grade, tighter than Grade AS-1 and Grade K), conforming to ASME B89.1.9-2002. The included Mitutoyo Certificate of Inspection (cert # T25C04488, dated 13 March 2025) documents measured central deviation of +1.6 µin, maximum deviation of +1.6 µin, minimum deviation of +0.4 µin, and flatness variation of 1.2 µin for serial number 25001, inspected at 68 ± 1.8 °F (20 ± 1.0 °C). Grade 0 steel gauge blocks are used as primary laboratory reference standards for calibrating measuring instruments, setting comparators and snap gauges, and verifying precision measurement equipment in tool rooms and metrology labs. The block is supplied in its original Mitutoyo packaging with a wring-compatible rectangular form factor and a central through-hole for accessory mounting (Mitutoyo series 614 accessory-hole style).
Product Specifications
| Brand | Mitutoyo |
| MPN | 614164-531 |
| Nominal Length | 0.124 in |
| Unit System | Inch |
| Grade (ASME) | Grade 0 |
| Standard | ASME B89.1.9-2002 |
| Material | Steel |
| Style | Rectangular w/ center hole (accessory hole) |
| Central Deviation | +1.6 µin |
| Maximum Deviation | +1.6 µin |
| Minimum Deviation | +0.4 µin |
| Flatness Variation | 1.2 µin |
| Certificate of Inspection | Included, cert # T25C04488 |
| Inspection Date | 13 Mar. 2025 |
| Serial / Ident. No. | 25001 |
| Inspection Environment | 68 ± 1.8 °F (20 ± 1.0 °C) |
| Condition | New |