BH the TDS-4 was available in the 1st or 2nd FP . It used to be available in the 2nd plane in the AV series of Swarovski scopes but I think they are TDS plex now. The 2 reticles are not same in either plane. I have an AV 4x12 and I decided to check it against a target marked in inches at a 100 yards. All the lines appeared to be correct with what the paper work said they should be except the last hash mark. I emailed Swarovski and they sent me the correct info for TDS-4. The scope had been shipped with TDS plex info.