Cutting & Measuring

1210 - SmallCircleCompass™

Using your router, you can cut circles from 1.5” to 12″ in diameter.


SKU: 1210 Categories: ,
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SmallCircleCompass™ - Replacement Parts

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With the SmallCircleCompass™, you can expand the capabilities of your router. Cut small circles from 1.5” in diameter to 12” in diameter. With the included TurnLock™ base plate, this product is compatible with most routers.

SmallCircleCompass™ Features

  • Built-in imperial and metric scales, with an easy readout window for setting the diameter of both your inside and outside cuts
  • Quickly and easily attaches to the included TurnLock™ circle guide head
  • Cuts circles from 1.5″ to 12″ in diameter

Equipped With The Patented TurnLock™ Technology

  • Allows for fast tool-free guide bushing and router attachment exchanges
  • Thumb-activated lock/release mechanism enhances speed and safety when changing tools
  • The TurnLock™ base plate accepts all Milescraft® bushings

For more information on our universal base plate, see our compatibility chart and template.

 WARNING: Cancer and Reproductive Harm. For more information go to

  • Includes

    Small Circle Jig, Circle Guide Head, TurnLock™ Base Plate, 1/4" Straight Router Bit, Drill Bit, Centering Pin, Bushing and Mounting Hardware.

  • Bushing

    5/8" Long Nose Metal Bushing

  • Drill Bit

    3/32" Brad Point Drill Bit

  • Router Bit

    1/4" Straight Router Bit

  • Material

    Glass-filled nylon, durable polycarbonate, and metal

1210 SmallCircleCompass Manual (pdf)

Download >>
Average Review:
5.00 out of 5 based on 1 customer rating

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  1. 5 out of 5

    (verified owner)

    I’ve used it a couple times but haven’t had a chance to use it for bigger circles but it seems to work well

Is the Ryobi One+ compatible with the base plate?

Yes, the Ryobi One+ P601 is compatible with the #30681 TurnLock Base Plate. This Ryobi router does not require special screws.

Is my compact/palm/trim router compatible with the base plate?

Base plate compatibility chart and template.


Compatible Compact/Palm/Trim Routers:

Bosch/Colt PR20EVSPK
Bosch GFK125CE
DeWalt DCW600B
DeWalt DWE6000
DeWalt DWP611
Ridgid R2401
Ridgid R24012
Ridgid R86044B
Ridgid R860443B
Ryobi P601

Not compatible w/o plunge attachment:

Makita RT0700C (requires a plunge attachment for installation on the base plate)
Makita RT0701C (requires a plunge attachment for installation on the base plate)
Makita XTR01 (requires a plunge attachment for installation on the base plate)
Bosch/Colt PR20EVS (requires a plunge attachment for installation on the base plate)
Milwaukee 2723-20 (requires Milwaukee plunge attachment 48-10-5601, will align with slots I and E.).

Not compatible:

Porter Cable PC450
Bauer 19121E-B

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