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Other products by LS Starrett

L.S. Starrett - 81970 - Granite Tri-Square, Size (In.) 6 in x 9 in x 3 in, Size (mm) 150 mm x 225 mm x 75 mm

  • MFR SKU: 81970
  • ITEM #: 5304363
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ITEM #: 5304363
Grade A (Inspection Grade) granite straight edges have a long and narrow face with a flat finish. These grade A straight edges have a medium-level tolerance and are accurate to 0.000050 inches per 6 inches overall length. They are durable, corrosion-resistant, and tolerate temperature fluctuations. Grade A straight edges are commonly used for on-the-floor applications such as layout and alignment during setup on a CNC or CMM machine. Inspection granite tri-squares have three sides and are used to...
ITEM #: 5304363
Grade A (Inspection Grade) granite straight edges have a long and narrow face with a flat finish. These grade A straight edges have a medium-level tolerance and are accurate to 0.000050 inches per 6 inches overall length. They are durable, corrosion-resistant, and tolerate temperature fluctuations. Grade A straight edges are commonly used for on-the-floor applications such as layout and alignment during setup on a CNC or CMM machine. Inspection 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.
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L.S. Starrett - 81970 - Granite Tri-Square, Size (In.) 6 in x 9 in x 3 in, Size (mm) 150 mm x 225 mm x 75 mm

  • Item #: 5304363
  • MFR SKU: 81970
  • Technical Specification
  • Item Granite Tri-Square
  • Long Form Calibration Certificate No
  • Material Granite
  • Application Grade Inspection
  • Color Pink
  • Flatness 0.000050 in per 6 in
  • Grade A
  • Height - Inch 9 in
  • Height (mm) 225
  • Included Certification Short Form Certificate of Accuracy with NIST Traceability
  • Length (In.) 6 in
  • Length (mm) 150
  • Number of Finished Faces 3
  • Number of Pieces Single Block
  • Parallelism 0.000050 in per 6 in, Maximum of 0.000075 in
  • Size (In.) 6 in x 9 in x 3 in
  • Size (mm) 150 mm x 225 mm x 75 mm
  • Width (In.) 3
  • Width (mm) 75
  • With Inserted Metal Disc No
  • With Lifting Holes No
  • Standards NIST

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