The Jasper Model 400 will make 105 different-sized circles in 1/16" increments, from 1" to 7-1/2" in diameter. Pre-drilled for mounting on virtually any router. With calibrated scale to read direct cutout diameter when 1/4" router bit is used. Comes with all hardware for mounting.
The Jasper Circle Cutting Attachment is designed to fit most plunge router base plates. This circle cutting jig lets you make 184 sizes of perfect circles from 7" all the way up to 52-3/4"! The built-in scale is calibrated to read direct tabletop diameters when a 1/2" router bit is used.