Thick dark line use to show outline of object, visible edges and surfaces.
OBJECT OR VISIBLE LINES
is derived from two Greek words "orthos" and "graphos".
ORTHOGRAPHIC
is used as guide in drawing horizontal lines.
T-SQUARE
Very light and thin line use to construct layout work.
CONSTRUCTION LINE
is a drawing of a three-dimensional shape on a two-dimensional surface along a vertical line with at least two identified points
ISOMETRIC DRAWING
Triangles are used as guide in drawing vertical and inclined lines.
TRIANGLE
Thin and dark lines use to show the size (span) of an object with a numeric value. Usually terminates with arrowheads or tick markings.
DIMENSION LINE
a template for a sheet and generally includes a border for the page and information about the design firm, such as its name, address, and logo.
title block?
Tool used to measure or layout an angle or an arc. It is either circular or semicircular. a
PROTRACTOR
Short dash lines use to show non visible surfaces. Usually shows as medium thickness.
HIDDEN LINE
means to write.
Orthos
It is necessary when erasing inked or penciled lines, views, and so forth, located in areas where there are other lines. It is generally of a thin sheet of stain-less steel or alloyed aluminum.
ERASING SHIELD
Long and short dash lines. Usually indicates center of holes, circles and arcs. Line is thin and dark.
CENTER LINE
means to draw
Graphos
also clutch pencil, is a pencil with a replaceable and mechanically extendable solid pigment core called a "lead".
MECHNICAL PENCILS