Shytorque - Chetwynd - many memories, Tee shirt earned!!
John D - the origin for 'fescalised' intrigued me also 'cos it was used for checking correct oleo extensions. Then one day I picked up an old engineering magazine '30s/40s era and there was an advertisement for the company which carried out the process. I think (therefore it's likely to be wrong!) that the company itself was 'Fescalise' but it may have just been the process. Sort of 'Hoover' for cleaners or Thermos for vacuum flasks.