I finally been able to split the pdf supplied by Adikarina relating to the Surelock into manageable parts that can be placed here; I have eliminated the non-useful pages.
Its fundamental design is based on that of the 63; however to think of it just as a modernised version is to do it a diservice. It is modular allowing significant components to be replaced quickly on site, the detection arrangements are thoroughly redesigned and it incorporates an entirely novel backdrive arrangement with combined backdrive crank / supplementary detection units. It has also reverted to the means of handcranking used on the earlier M3 series, with the great advantage of keeping flesh on the fingers of the hand which cranks!
Its fundamental design is based on that of the 63; however to think of it just as a modernised version is to do it a diservice. It is modular allowing significant components to be replaced quickly on site, the detection arrangements are thoroughly redesigned and it incorporates an entirely novel backdrive arrangement with combined backdrive crank / supplementary detection units. It has also reverted to the means of handcranking used on the earlier M3 series, with the great advantage of keeping flesh on the fingers of the hand which cranks!
PJW