Metric Spindle Square & Tramming Tool

Metric Spindle Square & Tramming Tool

Standard Spindle Square | Mini Desktop Spindle Square


We have had quite a few requests to make a Spindle Square for tramming in the world market that works with Metric collets and reads in native units. We have built a new spindle square just for this that offers all of the same adjustments but fits this world market demand.

The spindle square is adjustable with 8mm holes for 75 – 150mm. It can be used to tram on multiple vise sizes, and machines such as your mill, drill press, sine bar and lathe. You can use any indicator with a 8mm stem so you can install a brand or resolution of your preference. The hardware will never rust and shouldn’t damage your indicator unless you over-torque the thumbscrew.

Spindle Square Specifications

  • Main body is made out of 6061 Aluminum and measures at 175mm by 19mm by 19mm with a brushed finish
  • 125mm by 12mm hardened and chromed shank 18-8 stainless set screw to retain
  • 8mm x 6mm rare earth magnet for zero’ing square attached to square so it isn’t easily misplaced
  • Aluminum 3.5mm (6-32) thumb screws to retain indicators (anodized aluminum as to not mar indicators)
  • 8mm bores for Metric Indicators
  • Adjustments at 75mm, 100mm, 125mm and 150mm
  • Made on CNC equipment in OR, using USA made materials.

Dial Indicators

  • Large easy to read white face with crisp black graduations
  • 10mm total travel
  • 8mm shank
  • .01mm graduations
  • Color may vary
  • Made in China


  • Outside dimensions: 10.1″ x 8.0″ x 3.2″
  • Snap latch; Large comfortable handle
  • Rugged polypropylene with handsome textured finish
  • Thick foam padding
  • Made in USA


Keith Rucker over at did a wonderful overview of the product and how to use this exact model on your milling machine to align the spindle to your table.

Randy Richard in the Shop has also done a great overview using this Spindle Square to square his mill table utilizing an outside reference.


Spindle Square Only $47.50

Spindle Square with .01mm Indicators & Case $115


Spindle Squares are shipped via the United States Postal Service in either first class or flat rate padded envelopes/boxes. They are shipped bare tool with indicators packed in original foam padding and white boxes.

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