Which one of the following is used to cut internal threads on capstan lathe ?

6) Stops and trips are provided on capstan and turret lathe for controlling the movement of the cutting tool on :

7) The shape of rollers in the roller box turning tool is :

8) On a capstan lathe multiple cutter holder is used for :

9) Which among the following is the method of operating the work holding devices on capstan and turret lathe ?