Double Square, 3-1/2x9/16 In, 4R Grad, 2 Pc MPN:13A

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Brand: Starrett
Part #: 13A
UPC: 049659501094
SKU
510-G3739321
Regular Price $226.51 Special Price $161.79

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Double Square, 3-1/2x9/16 In, 4R Grad, 2 Pc

This Starrett Double Square is a precision tool ideal for measuring and marking accurately in various industries. Its 3-1/2 x 9/16 inch head and 4-inch long blade with satin finish provide a durable and reliable measuring experience. The graduated blade features 1/64 inch markings, allowing for precise measurements. The tool is perfect for woodworkers, machinists, and engineers who require high accuracy in their work. With its chrome-coated blade and etched graduation marks, this double square is a valuable addition to any toolbox, ensuring accurate measurements and efficient work processes.

Top product features:

  • With Graduated Blade Only
  • Graduation Marks Front 1/64 in
  • Head Vial Included Yes

Top product applications:

  • Calibration and Quality Control
  • Precision measurement and calibration of parts and tools
  • Checking the squareness and accuracy of machined parts and tools
  • The STARRETT 13A is a 2-piece double square with a 4 in graduated steel blade and a square head. It is used for precision measuring and layout work, with an adjustable sliding blade for different measurement and marking positions. The head faces are ground square, and the blade has a satin chrome finish with inch graduations.

    Key features of the STARRETT 13A:

    • Item Type: Double square with graduated blade only.
    • Blade Size: 4 in long, 3/4 in wide, and 0.08 in thick.
    • Blade Material and Finish: Steel blade with satin chrome finish.
    • Graduation Style: 4R graduation with quick-reading 8ths, 16ths, 32nds, and 64ths.
    • Graduation Details: Inch units with black etched marks
    • front graduation marked to 1/64 in.
    • Head Construction: Square head made of cast iron with enamel coating.
    • Head Size: 3 in head length, 9/16 in head width, outside dimensions 3-1/2 x 9/16 in.
    • Head Vial: Includes vial in the head.
    • Accuracy: +/- 0.0025 in.
    • Squareness Tolerance: +/- 0.002 in.
    • Straightness Tolerance: 0.001 in/ft.
    • Measurement System: SAE.



Additional Information

  • Country of Origin: US
  • Drop Ship Item: No
  • Blind Ship Eligible: No
  • LTL Freight Required: No
  • Lead Time: Ships in 1 days
  • Minimum Order Quantity: 1
  • Unit of Measure: EA
  • Package Length: 4.90
  • Package Width: 3.70
  • Package Height: 0.90
  • Package Weight: 0.25
Product info last updated on February 21, 2026 3:28pm UTC Category: Measuring and Marking Tools
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In stock