3 degree to 5 degree
8 degree to 12 degree
12 degree to 20 degree
15 degree to 20 degree
Taper Tap
Second tap
Bottoming Tap
Any one of these
The tap used to cut threads in a blind hole is bottoming Tap
Gas
Resistance
Arc
Thermit
Electrode is consumed in arc welding process.
Protective layer
Blinder
Flux
Slag
Drawing drill location
Fixing chuck on the machine spindle
Removing a broken drill from the work
Removing the drill from the machine spindle
A drift is used for removing the drill from the machine spindle.