The Mitutoyo Inch Rectangular Long Block Gage Block sets offer exceptional precision and stability for calibration and manufacturing traceability of longer workpieces. Gage block sets are available in different grades, sizes, and steps, offering exceptional precision and stability for calibration and manufacturing traceability. The Mitutoyo innovative lapping technique makes their gage blocks some of the most accurate and trusted instruments in the world, featuring exceptional flatness and ideal surface roughness. Mitutoyo steel gage blocks are constructed of high-carbon, high-chrome steel while the CERA gage blocks are constructed of ceramic materials with superior surface qualities and corrosion resistance.

Mitutoyo Inch Rectangular Gage Block Set - Long Block:

• Available in steel and CERA block sets (8 pcs. Sets)
• Specific, repeated heat treatment of steel blocks reduce deterioration change over time
• CERA blocks are free from dimensional change over time; have 10 times the abrasion resistance of steel gage blocks
• Advanced lapping techniques achieve the best flatness, surface roughness needed for gage blocks
• Designed to check and calibrate longer measurement instruments
• Black characters on gage blocks are inscribed by laser and clearly visible
• Provided with Inspection Certificate
• Supplied in a solid wooden case

Accuracy - Mitutoyo has established a traceability system for measurement products, up to the Metrology Management Center of the National Institute of Advanced Industrial Science and Technology (AIST), and have been certified by the Japanese government as an accredited laboratory.

Wringing - The Mitutoyo advanced lapping technique, developed for more than a half-century by Mitutoyo, achieves the best flatness and surface roughness needed for gage blocks.

Steel Blocks - The Mitutoyo steel gage blocks are constructed of high-carbon, high-chrome steel. High-carbon, high-chrome steel is employed to sufficiently satisfy a variety of material characteristics required for gage blocks. A high degree of hardness, obtained by Mitutoyo heat treatment technology, as well as methodically repeated heat treatment, have successfully reduced deterioration change over time.

CERA blocks, made of ceramic materials with superior surface quality, were developed by Mitutoyo’s ultra-precision machining techniques and solve problems commonly associated with steel gage blocks:

• Corrosion-Resistant - Anti-corrosion treatment is not required when handled normally (i.e. with fingers), resulting in simple maintenance and storage
• No Burrs Caused by Dents - Since the CERA Block is very hard it will not scratch and is highly resistant to burrs. If a burr is formed, it can easily be removed with a ceramic deburring stone (Ceraston)
• Abrasion Resistant - CERA Blocks have 10 times the abrasion resistance of steel gage blocks
• Dimensional Stability - CERA Blocks are free from dimensional change over time
• Marking - Black characters, indicating the nominal length, inscribed by laser, clearly visible against the white surface of block
• High Wringing Force - An even, dense tissue can maintain a strong wringing force
• Closest Expansion Coefficient to Steel - The thermal expansion coefficient of a CERA Block is similar to that of a steel gage block
• Resistance Against Drops - CERA block material is one of the toughest ceramics materials, and is extremely difficult to crack under normal use 

These 8-Piece Block Sets Include the following blocks in Steel or CERA and Grades 0 or AS-1:

• 8 pcs. (1 – 8in; Step of 1in)

These 8-Piece Block Sets Include the following blocks in Steel or CERA and Grades K, 00, 0 or AS-1:

• 3 pcs. (5 – 7in; Step of 1in)
• 3 pcs. (8 – 12in; Step of 2in)
• 2 pcs. (16 – 20in; Step of 4in)