TECHNICAL DRAFTING Q1

ISO

International Organization for Standardization

Roman Lettering

Serif; Found in Old Greek Writings, Office Letterheads, Structures, and School Marks

Old English

Used mostly for certificates and diplomas

Uniformity of lettering (SWISH)

Strokes, Weight of Lines, Inclination, Spacing, and Height

Types of Letters according to Strokes

Straight, Straight with Incline, Curved, Straight with Curved

Geometric Construction

The process of drawing lines, angles, and other geometric shapes and figures using only a compass and a straightedge.

Polygons

A closed plane figure bounded by straight lines

Parts of Compass (HHLPP)

Hinge, handle, legs, point, and pencil

Orthographic projection

Process of representing three-dimensional objects in two dimensions. A form of parallel projection in which the top, front, and side of an object are projected onto perpendicular planes

Ortho

straight, upright, vertical

Graphic (‘Graphos’)

marked by clear lifelike or vividly realistic description

Working Drawing

A reference or guide in the manufacture of a product

Alphabet of Lines

A list of line symbols that engineers and draftsmen use in technical drawings to communicate specific shapes, sizes or surfaces.

Visible Lines

Outlines; thick and heavy

Construction Lines

Shouldn’t be erased; thin and very light

Bloom’s Taxonomy (CEAAUR)

Create, Evaluate, Analyze, Apply, Understand, and Remember