Layout Flashcards
Which part of the combination set would be used to find the center on the end of a shaft?
A center head rule
What are the three(3) grades of accuracy that surface plates are manufactured in?
- Grade AA - laboratory
- Grade A - Inspection
- Grade B - Toolroom or shop grade
What are the most common scribers used in layout?
- high speed steel knife edge scriber
- carbide edge knife scriber
- pocket scriber
- engineers scribe
Precision layout with a vernier height gauge is accurate to?
.001 inch or .02mm
Dividers are available in two types
- Firm Joint
* Spring type
The most common used hammer for layout is?
Ball- peen hammer
What is the most common used square for basic layout?
Combination square
A prick punch has an included angles that ranges from?
30° to 60°
A center punch has an included angle of?
90°
What is the most common tool used for precision layout?
The height gauge
What are hermaphrodite calipers used for?
to scribe lines parallel to an edge, and it can be used to find the centre of a shaft
note: accuracy may not be accurate
List the hermaphrodite calipers
- Firm joint
* Lock joint with fine adjustment
The accuracy of the layout will depend on?
How square and flat the edges of prepared work piece are made
What is the safest oil to use when quenching oil hardening parts?
High flashpoint quenching oil
What mixture can be applied to the surface of large size castings and hot rolled metals?
Lime and Alcohol
On surfaces of hot rolled steel and castings to make layout more identifiable, you should use?
Chalk
The mixture that can be use during layout on metals such as aluminum and copper ii?
Vermilion and shellac
Copper sulphate should be used on?
Ferrous metals
When angles are laid out with a bevel protractor, the attainable accuracy is?
0.5° (30 minutes)
Before using a vernier height gauge it is important to?
To zero the vernier to the reference surface
For maximum reliability when setting the dividers to a dimension on a steel rule?
You should set one point to the 1 inch graduation or the 10 mm mark of the rule
If lines are scribed on to a work piece it is considered to be?
Temporary layout
The grade of the surface plate which is used in the shop is?
B-Grade
What is an acute angle?
Anything less than 90° of an angle
When using basic semi-precision layout practices. all measurements for any location must be taken from?
Reference line or the finished edge
