649-1M Spindle Square 52082

The Starrett 649 Series Spindle Square offers accuracy, convenience and significant time saving with the common shop task of tramming the head of a vertical milling machine. This must be done regularly to ensure squarness and perpendicularity between the spindle and work surface. The spindle square is easier to use and more precise than the traditional method of tramming with a dial test indicator. 0.01mm Grad, 0-50-0 Dial; 2.5mm Range.

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  • Fully assembled with two AGD Group 2 dial indicators
  • Patented design
  • Solid steel body construction with durable black oxide finish
  • Ground gaging surface
  • Approximately 4 lbs with custom case
  • 3/8" inch shank diameter
  • 4" (100mm) between contact points
  • Approximately 6-3/4" (172mm) wide and 5-1/2" (140mm) from the top of shank to the end of the contact points


  • Type: Spindle Square
  • Range (mm): 2.5mm
  • Graduations (mm): 0.01mm
  • Dial Reading: 0-50-0


    649 Spindle Square User Guide (Form 954)

    Brochure on how to use the Spindle Square

    649 Spindle Square (Bulletin 388)

    Datasheet stating how to use product, product overview, features, and specifications.

    Catalog 33 - Section 5 - Dial and Electronic Indicators and Gages

    We offer a variety of each of the major classes: mechanical dial, electronic display, lever style test and back plunger. Indicator requirements are very specific and Starrett offers everything you need: a broad line of each indicator type, an extensive range of accessories to configure and position the gage, and as needed, an indicator-based, custom engineered solution.

    Precision Hand Tools (Catalog 33)

    612 page catalog featuring precision hand tool, force measurement, vison systems, optical comparators, laser measurement, and flat stock.