What is the formula to calculate the amount of taper in the tailstock offset method?
1
\(\rm \frac{(D-d)}{2}\times\frac{l}{L}\)
2
\(\rm \frac{(d-D)}{2}\times\frac{l}{L}\)
3
\(\rm \frac{(D+d)}{2}\times\frac{l}{L}\)
4
\(\rm \frac{(D-d)}{2}\times\frac{L}{l}\)