Milescraft Small Circle Compass 1210 - The Home Depot
Low-Tech Router Compass Cuts Large Circles - FineWoodworking
Taytools 468945 48 Inches Router Compass Trammel Circle Cutting Jig 8 Inches to 48 Inches Made from 1/4 Inch Acrylic - - Amazon.com
MLCS Woodworking Part 1 Assembly of Router Compass Adjustable Circle Jig - YouTube
Milescraft 1210 Small Circle Compass- Router Circle Cutter Jig For Cutting & Routing Small Circles From 1.5in. Up To 12in. Diameter- Includes Turn Lock Base Plate -Compatible With Most Routers - - Amazon.com
Trim Router Circle Jig - Rockler Woodworking Tools