Measure depth

Measure external dimens

Measure angular dimension

Measure size of holes, slots

Ezy out method

Making drill hole

Prick punch method

Using square taper punch

60 Degree

90 Degree

105 Degree

120 Degree

Point angle

Rake angle

Chisel angle

Clearance angle

Drill a hole

Enlarging a hole

Threading a hole

Finishing to correct size of the drilled hole