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Measuring RTJ Ring Grooves Made Easy!



The UK & Ireland’s Leading Engineering Cutting Tool and Measuring Tool Supplier Cutwel are proud to announce the release of a new RTJ Ring Groove Caliper for both inside and outside measurements. 

Every engineer knows how tricky it can be to measure an RTJ groove, especially with the valve still on the machine however Cutwel’s new addition makes struggling to measure these grooves a thing of the past. The unique design of the caliper eliminates the need to remove the valve from the machine and also having to reset the job if any reworking is required.  

Manufactured by one of Cutwel’s major suppliers Insize, these high quality, high performance Calipers allow for Quick and easy measurement while the workpiece can stay fixed in the machine.  It is applicable for RTJ Ring grooves with 23 degrees angle. Made with a stainless steel body for durability and a resolution of 0.01mm/0.0005” for high accuracy the new Digital RTJ Ring Groove Caliper from Cutwel is available now!


Buy online today at or for more information please call 01924 869 610 or email