Granite Tri-Square Pink 3-Face AA 9x12x3 MPN:81961

Grade AA (Laboratory Grade) granite tri-squares have three sides and are used to check the X, Y, Z axes on CNC machine tools and coordinate measuring machines (CMM). When used in a horizontal position, they can check the X and Y axes for 90° squareness. When used in a vertical position, they can be traced along the edge to check the perpendicularity of the Z axis. They are also used for checking general squareness and straightness. They are durable, corrosion-resistant, and tolerate temperature fluctuations. These grade AA tri-squares have the highest degree of accuracy and are often used in calibration laboratories and high-precision metrology and inspection labs.

Technical Specifications

• Item Granite Tri-Square
• Long Form Calibration Certificate No
• Material Granite
• Application Grade Laboratory
• Color Pink
• Flatness 0.000025 in per 6 in
• Grade AA
• Height - Inch 12 in
• Height (mm) 300
• Included Certification Short Form Certificate of Accuracy with NIST Traceability
• Length (In.) 9 in
• Length (mm) 225
• Number of Finished Faces 3
• Number of Pieces Single Block
• Parallelism 0.000025 in per 6 in, Maximum of 0.00005 in
• Size (In.) 9 in x 12 in x 3 in
• Size (mm) 225 mm x 300 mm x 75 mm
• Width (In.) 3
• Width (mm) 75
• With Inserted Metal Disc No
• With Lifting Holes No
• Standards NIST

Manufacturer Details

• Manufacturer: Starrett
• Condensed Mfg Number: 81961
• MPN: 81961

Label Details

• Hazardous Material: N
• Green Material Flag: N
• Country of Origin: US
• CA Prop 65 Wht Label: N

Classification Details

• Harmonization Code: 9031808080
• GDS Category Name: Granite Parallels Tri-Squares and Straight Edges
• GDS Family Name: Precision Measuring - Workspace Equipment
• GDS Segment Name: Machining
• UNSPSC: 23153001
• UNSPSC Class ID: 30
• UNSPSC Commodity Name: Holding and positioning and guiding systems and devices
• UNSPSC Commodity ID: 01
• UNSPSC Commodity Name: Calibration jig
• UNSPSC Family ID: 15
• UNSPSC Family Name: Industrial process machinery and equipment and supplies
• UNSPSC Segment ID: 23
• UNSPSC Segment Name: Industrial Manufacturing and Processing Machinery and Accessories

Shipping Details

• Not For Sale In: HI AK PR