I m currently watching at least 1 of the videos everyday till am done watching all of them.and I must confess I have really been gaining knowledge. I reside in Nigeria and your teachings matches with what we are been taught over here. God bless you sir.
Hello Sarah, this is because the chart is designed out of 6 metres and this is why we put readings like 5/6 or 6/6... The bottom number is the 6 metres.