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Sawstop TSA-SMG Scale Miter Gauge

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Engineered to bring can’t-miss accuracy to any table saw, the Scale Miter Gauge (SMG) features a protractor head with a pointer-and-notch alignment mechanism that locks in 181 precise angles. Anchor that to a premium adjustable miter bar and add a heavy-duty extendable fence and micro-adjustable flip stop for making repeated cuts of the same length, and you have a premium miter gauge that will take your woodworking to a whole new level of accuracy.

Standard Equipment:

  • Miter Gauge With Extendable Fence
  • Dual-Arm Flip Stop
  • Reversible Ruler For Main Fence (14-1/4")
  • Reversible Ruler For Fence Extension (18")
  • (1) 24mm Steel Rod
  • (2) 38mm Steel Rods
  • 3mm Hex Wrench
  • 5 mm Hex Wrench


  • Angle Range: 90° Left To 90° Right
  • Angle Detents: 181
  • Miter Bar Dimensions: 3/8" X 3/4" X 18"
  • Fence Length: 18-1/4" (Retracted), 31-1/2" (Fully Extended)
  • Fence Height: 2-3/8"
  • Miter Slots: T-Shaped - 3/4" At Top, 1" At Bottom, 3/8" Deep
  • Weight: 6.2 Lbs


  • The precision protractor head features a pointer and 90 notches in 1° increments each side of 0°, including one for 22.5° on each side. In addition, the built-in Vernier scale gives you the ability to fine-tune any angle in 1/10° increments.
  • An 18"-long miter bar, made to fit in common 3/8" x 3/4" miter slots, uses six adjustable washers to eliminate side-to-side wiggle in the miter slot while ensuring a smooth glide forward and back. A screw-on T-clip at the front of the bar holds the bar level in the miter slot when you pull the head off the table.
  • The aluminum fence provides a larger reference for holding workpieces accurately (compared to the head alone), with a telescoping extension that reaches up to 31-1/2" (34" with the flip stop). A T-slot in the front face provides a place to attach auxiliary wood fences with T-bolts. The scale on top of the fence can be calibrated to enable making precise crosscuts without having to measure and mark your boards.
  • Use the flip stop to make repeated cuts at the same setting for identical project parts. The flip stop indexes on the fence with a tooth-and-notch system that lets you position it in 1/32" increments. The flip stop’s dual arms can be set independently at different lengths from the blade or linked together with a rod, all of which can be fine-tuned with a built-in micro-adjuster.

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