Technical Drawing and Engineering Graphics - Lettering

Flashcards based on the lecture notes about lettering in technical drawing and engineering graphics.

What is Chapter Two of Technical Drawing with Engineering Graphics, 15th edition, primarily about?

Layouts and Lettering

What are some of the drawing vocabulary topics covered?

Drawing Lines, Lettering, Measurement Systems, Scale, Title Blocks

What are the main topics related to the alphabet of lines?

Thick and Thin Drawing Lines and Line Styles

Name three types of thin lines used in technical drawings.

Dimension lines, Extension lines, and Leaders

Name two types of thick lines used in technical drawings.

Cutting-plane lines and Viewing-plane lines

What characterizes freehand lines, and what are freehand construction lines like?

Freehand lines show freedom and variety, and construction lines are very light, rough lines.

What are the key requirements for lettering in engineering drawings?

Lettering should be legible, easy to create, and use styles acceptable for traditional drawing and CAD drawing.

Why do engineering drawings use single-stroke sans serif letters?

They are highly legible and quick to draw.

What is the typical height for hand-drawn or CAD notes in engineering drawings?

Approximately 3 mm (1/8") high

What lettering style is typically used in CAD drawings?

Gothic (sans serif)

What type of guidelines should be used for hand lettering to maintain uniform letter height?

Use extremely light horizontal guidelines to keep letter height uniform.

What is the common height for capital letters in hand lettering?

Capital letters are commonly made 3 mm (1/8") high.

What is the typical slope of inclined (italic) capital letters and numerals?

About 68° from the horizontal

What are some rules to follow when lettering fractions?

Never let numerals touch the fraction bar; center the denominator under the numerator.

What type of guidelines should be used to maintain uniform letter height?

Use extremely light horizontal guidelines.

How should letters and words be spaced in lettering?

Space letters closely within words but space words well enough apart to clearly separate them.

How should the title be arranged when lettering by hand?

Arrange the title symmetrically about an imaginary centerline.

What are medium grade drawing pencils used for?

These grades are for general-purpose work in technical drawing.

Which pencils are mainly used in freehand sketching?

Soft pencils, such as HB or F.

What qualities should you look for when choosing a pencil for drawing?

Is soft enough to produce clear black lines, but hard enough not to smudge too easily.