(a) Subjected to very large pressure

(b) When large diameter pipes are required

Both (a) and (b)

None of the above

PVC pipes

Copper pipe

Steel pipes

GI pipes

25 mm

15 mm

10 mm

12.5 mm

Branch of 50 Degree

Branch of 45 Degree

Branch of 120 Degree

Branch of 90 Degree

Outside caliper

Inside caliper

Steel rule

Scriber