Hey guys,

I have a question which I am certain that someone can answer. Take a look at the below image. This is an image of the chart on a lathe which tells what numbers to pick on the chasing dial when threading. On the far left side is the column " T ". Also the " T " is a middle column. Under the " T " is the number 16. What does the " T " represent (what is this saying to me) and what is the significance of the number 16 in both columns?

Harold

I have a question which I am certain that someone can answer. Take a look at the below image. This is an image of the chart on a lathe which tells what numbers to pick on the chasing dial when threading. On the far left side is the column " T ". Also the " T " is a middle column. Under the " T " is the number 16. What does the " T " represent (what is this saying to me) and what is the significance of the number 16 in both columns?

Harold

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