Question

Which Gauge is used to Draw Parallel Lines

Answer 1

An surface gauge is one of the common instrument used for :

1. Drawing lines parallel to the datum surface
2. Set work in machine parallel to the surface of the datum.
3. Set job concentric to the surface of the machine spindle

Surface gauge is of two types:

1. Fixed type
   
2. Universal type
   

Construction:

1. An surface gauge consists of a magnetic base by which it can be used for turning on and off the magnetic field when necessary.
2. When using its position can be locked and can be removed by turning off the magnetic field.
3. An arrangement of scribbler attached to the vertical bar via a clamp is made.
4. The vertical bar is called as a spindle.
5. The scribbler can be moved or rotated with the help of the universal clamp.