7.1 Basic Blueprint Reading - Basic Mill Operator

It is not important for the machine Operator to identify the Revision Level on the drawing and match that Revision Level to the program in the CNC machine.

False

In the case of a drawing callout for a hole feature, you may see a 2X or a 4X. The number and X simply note:

How many times on the drawing that identical feature exists

The common format for a part drawing divides the drawing into zones. These zones are: Choose one

Letters (A thru Z) on the bottom axis, and numbers (1-10) on the side axis

On the face of the drawing, there is a specific section for NOTES. Where on the drawing are the NOTES typically located?

Lower left corner

The drawing Title Block - which lists the Company Name, the Drawing or Part Number, the Revision Level, the Tolerance Callouts, and more - is typically located in _______ of the drawing.

The lower right corner

Engineering drawings offer two ways to display views of a part. Those two views are:

Third angle projection or first angle projection

A very important element of the drawing is the location of the Revision History Block on the face of the drawing. The location of the Revision History Block on drawings is the:

Top right corner

A "tolerance" on a drawing tells the machinist the amount and the direction that a feature can deviate from a dimension on a drawing.

True

Blueprints are commonly referred to as drawings. The blueprints or drawings are the method that engineers use to tell a machinist how to make a part, what is critical about the part, the material you need to make it from, and more.

True

Each dimension on a drawing will have a varying number of digits to the right of the decimal point. Generally speaking, the number of digits to the right of the decimal point tells the machinist how critical that dimension is.

True

Section Views on a drawing are displayed by a dashed line across the surface of any view of the part on the drawing. This 'Section View' will give the Operator the view of the internal details of features that are within the body of the part.

True

The leader lines will signify the location of the feature based on a starting point (such as a fixed edge of the part), or the actual endpoint of the feature (such as the center of a hole in the part).

True

There are many numbers listed on the face of a drawing. Each number that you see on a drawing is called a dimension.

True

There may be several detailed views on a drawing. Each detailed view will be listed with a separate letter, such as Detail A, Detail B, etc.

True