Radial follower
Off-set follower
Both (1) and (2)
None of the above
to change the structure of steel
to increase the surface hardness
to increase resistance to heat and corrosion
all the above
Tempering
Carburising
Annealing
Nitriding
Chromium
Carbon
Sulphur
Phosphorus
Pig iron
Wrought iron
Cast iron