No, his exact words on our yearly office based assessment to me, our QS, and my coleague, 'How often should your meters be calibrated', my mate said yearly, he said no, etc until I said no requirement, that's when he gave the speal as I mentioned above, as my previous though, and hearing others comments, I do it every year to be sure-does beg the question though, do even the assessors really know their stuff?, or is it just pay us the money or you won't be in our club?.