PipeMaster P-250 (2-1/2" Pipe and 2-7/8" O.D. Tube) - Amazon.com
Tube Notching Guiding Tool | GizFab
Contour Gauge by 99gst_racer -- Homemade contour gauge consisting of spaghetti wrapped and zip-tied around a length of pip… | Welding table, Homemade tools, Welding
Free STL file Tubing Contour Gauges・3D printer model to download・Cults
Homemade Contour Gauge| Your Tech Tips forum
Tube & Pipe Notching Tracers, Get the perfect notch first try! — Centurial Inc
Free STL file Tubing Contour Gauges・3D printer model to download・Cults