Bridgeport Style Tramming Ring Precision Ground Made in USA

I got tired of chasing inconsistent readings depending on how I set up 1-2-3 blocks, hand positioning, etc. , so I made a dedicated tramming ring to simplify the process. This sits flat on the table or inside of the vise and gives repeatable readings without introducing extra variables. Made from 52100 bearing steel. Hardened to 60 HRC. Blanchard ground to 0.0003 parallel. If you’re running a Bridgeport or similar manual mill and want a quicker, more consistent way to check tram, this does exactly that. Built by a machinist – not a marketing company. Material: 52100 bearing steel. Heat Treatment: Hardened to 60 HRC. Parallelism: Ground to 0.0003. Wall Thickness: 1.000. Designed for Bridgeport-style milling machines and similar vertical mills. Protective black PLA storage case. Faster setup than traditional dial indicator methods. High rigidity and repeatability. Ideal for job shops, toolrooms, and home machinists. Built by a U. MADE IN THE USA.