Finally got around to measuring the CuNiFe pole piece magnet strength on my vintage original WRHB. As I noted above, Telenator had said it should be ~600 Gauss (60 mTesla; 1G = 0.1 mT), otherwise it might need re-magnetizing (eg he found only 200-300 G sometimes). https://www.tdpri.com/threads/new-cover-on-vintage-wide-range-humbucker.219330/#post-2605072 I used the WT10A magnetometer ... https://www.tdpri.com/threads/chinese-magnetometer-going-for-about-100.805654/ Most of the CuNiFe pole pieces measure ~50mT or more in situ, with the cover removed but otherwise intact (touching the tip of the pole piece, coming at it from away from the coil, ie not passing over other coil or poles). The readings were never very steady (ie they varied a lot with slight probe movement), but approx mT readings were ... North coil: screwheads 60 55 65 flattops 50 60 84 South coil: flattops 55 62 50 screwheads 55 55 54 Maybe the readings would be more stable if the coils were separated, and more stable again if individual pole pieces were separated ? In any case, it seems that they have not obviously lost much magnetism. It was last bought in ~1980, at which time it had been heavily used (cover was heavily worn), but has had very little use since. I am now about to put it into a Tele Custom partscaster. So my planned re-magnetization can be postponed for a while yet. I have a shiny new reissue cover to put on it, although the Gitec finding that the original cover differs materially from the reissue cover (although ostensibly visually identical) has given me some second thoughts.