trapdoor, Your right, with a double bevel tee joint, face "A" is your call. Just make sure that which ever side you pick is consistant for traceability. Look at the testing angle general notes, particularly the 1st and 3rd. At 1 3/4" thickness you are right at the border of procedure legend 1 or 4. Either way full examination of that joint on the 1st leg from one face, considering weld profile and the distance from the index point of the shoe to the end of the shoe, is not possible with either the 70 or the 60. Now considering testing angle general note 3, full coverage of the weld from one face is attainable by evaluation from the second leg. Bear in mind though if this is a cyclically loaded tension joint then testing angle general note 5 comes into play. Considering your planning on using procedure legend 4 on this thickness full examination coverage is possible. Just figure out at where the top, middle and bottom quarter depths are at. The middle and bottom will be evaluated with the 70 on the first leg, however the upper quarter with the 60 will be on the second leg. I agree with taintedhalo, depending on the orientation of the reflective surface, the indication may reflect higher from the opposite face. Seen that many times. Thats why I would emphasize to be consistant in identifying face "A" so results are consistant. Best of luck MR