Mitutoyo 613192-521 Ceramic Rectangular Gage Block 0.20 In ASME Grade 00

The Mitutoyo 613192-521 is an individual rectangular ceramic (CERA) gage block with a nominal length of 0.20 inches, manufactured to ASME B89.1.9-2002 Grade 00 — the highest accuracy grade for demanding precision measurement applications. Also known as gauge blocks, slip gages, Jo blocks, or Johansson gages, these precision reference standards are essential tools for calibrating measuring equipment and standardizing length measurement in manufacturing and metrology environments.

Mitutoyo's CERA blocks are constructed from zirconia ceramic, a material chosen for its exceptional dimensional stability, superior surface quality, and resistance to thermal expansion — advantages that address common limitations of traditional steel gage blocks. With 10 times the abrasion resistance of steel, CERA blocks deliver extended service life in high-use environments.

Key Features:

• Nominal Length: 0.20 inches (imperial/inch measurement)
• Shape: Rectangular — engineered for accurate and reliable wringing
• Material: Zirconia ceramic for dimensional stability and thermal expansion resistance
• Grade: ASME Grade 00 — highest precision grade, ideal for use as a reference standard in controlled environments
• Compliance: Meets ASME B89.1.9-2002 standards for flatness, length, parallelism, and surface finish
• Identification number etched directly on the block for full traceability
• Nominal length engraved in inches on each block face
• Supplied with a NIST-traceable Mitutoyo Certificate of Inspection verifying conformance to grade standards

Grade 00 gage blocks are primarily used within controlled environments as reference standards for setting high-precision measuring equipment, calibrating lower-grade gage blocks, and verifying the accuracy of gages, mechanical parts, and tooling. Sold individually — ideal when only a single length is needed repeatedly.