Per API 5B 5.6.2, thread form and angles "shall be assessed with an Optical Comparator/Profile Projector[...]"
Further, 5.6.4 requires "comparing the thread profile image with that of a tolerance overlay."
Mitutoyo Optical Comparator and Gagemaker Overlay
For all 5B threads listed under section 4.9, measuring form and angle are now mandated.
An optical comparator with Gagemaker's toleranced overlays meet all your needs and requirements.
API 5B 5.6 & 5.7 REQUIRE BUTTRESS FORM INSPECTION
Per API 5B 5.6, Buttress Thread Form "shall conform to .. the requirements of tooth thickness or groove width".
TW-6001 Thread Groove Width Gage Inspecting a Part
Tooth thickness is now a required, mandatory element to be inspected.
Thread Check Inc. is an authorized Gagemaker distributor.
For additional information and pricing contact firstname.lastname@example.org or 631 231 1515