ADDA DRAFTING CERTIFICATION
COMPETENCY 1 (GENERAL
TERMINOLOGY )
cm - answer: 1/100th of a meter.
millimetres - ANSWER: one-thousandth of a meter
Meter – ANSWER basis for the metric system; equivalent to 100 cm, 1000mm,
10 dm, etc.
ANSWER: 1/10th of a meter.
American Society of Mechanical Engineers - ANSWER
Dekameter - ANSWER 10 meters
kilometer - ANSWER 100 dekameters or 1000 meters
ANSWER: 25.4 millimetres per inch
A fraction is a portion of a whole, such as 1/2 or 1/4.
1:2 - ANSWER hal
f scale
2:1 - ANSWER twofold size.
ANSWER: drawing an item to a given proportion.
The metric system is a decimal system of weights and measures based on the
meter and kilogram. The SI (international system) linear unit is a millimeter.
lettering: ANSWER single stroke gothic. TOM Q. VAXY is all the letters that
are as tall as they are wide, drawn with HB.
, Foreshortened - ANSWER surfaces do not provide a clear or accurate portrayal
of the size or shape of the surface or features and should not be dimensioned;
lines and surfaces that are inclined to the image plane seem this way.
ANSWER: bisecting dividing into two equal pieces; drawn by setting compass
length more than half of the length of the line and striking an arc with center at
each endpoint, then drawing a line perpendicular to the original line through the
place where the arcs crossed.
Equilateral - ANSWER: all side lengths are equal.
concentric - ANSWER with a shared center
180º is the number of degrees in a triangle.
360º is the number of degrees in a circle [or quadrilateral].
A quadrant is one of four parts that divide the coordinate plane (and/or a circle).
revision block - ANSWER positioned in upper righthand corner of page;
concise statement of revisions made to a drawing since it was initially published
for manufacture, including revision zone, letter, date, and name of revisor and
revising checker.
surface finish mark - ANSWER can look as checkmark, check with a micron-
smoothness number in it, a V, or a S with a line through it where it meets with
the object line; signifies surfaces that are machine finished.
ANSWER A-size layout (8.5" x 11").
11" x 17" - Answer B-size layout.
ANSWER C-size layout measures 17" x 22".
COMPETENCY 1 (GENERAL
TERMINOLOGY )
cm - answer: 1/100th of a meter.
millimetres - ANSWER: one-thousandth of a meter
Meter – ANSWER basis for the metric system; equivalent to 100 cm, 1000mm,
10 dm, etc.
ANSWER: 1/10th of a meter.
American Society of Mechanical Engineers - ANSWER
Dekameter - ANSWER 10 meters
kilometer - ANSWER 100 dekameters or 1000 meters
ANSWER: 25.4 millimetres per inch
A fraction is a portion of a whole, such as 1/2 or 1/4.
1:2 - ANSWER hal
f scale
2:1 - ANSWER twofold size.
ANSWER: drawing an item to a given proportion.
The metric system is a decimal system of weights and measures based on the
meter and kilogram. The SI (international system) linear unit is a millimeter.
lettering: ANSWER single stroke gothic. TOM Q. VAXY is all the letters that
are as tall as they are wide, drawn with HB.
, Foreshortened - ANSWER surfaces do not provide a clear or accurate portrayal
of the size or shape of the surface or features and should not be dimensioned;
lines and surfaces that are inclined to the image plane seem this way.
ANSWER: bisecting dividing into two equal pieces; drawn by setting compass
length more than half of the length of the line and striking an arc with center at
each endpoint, then drawing a line perpendicular to the original line through the
place where the arcs crossed.
Equilateral - ANSWER: all side lengths are equal.
concentric - ANSWER with a shared center
180º is the number of degrees in a triangle.
360º is the number of degrees in a circle [or quadrilateral].
A quadrant is one of four parts that divide the coordinate plane (and/or a circle).
revision block - ANSWER positioned in upper righthand corner of page;
concise statement of revisions made to a drawing since it was initially published
for manufacture, including revision zone, letter, date, and name of revisor and
revising checker.
surface finish mark - ANSWER can look as checkmark, check with a micron-
smoothness number in it, a V, or a S with a line through it where it meets with
the object line; signifies surfaces that are machine finished.
ANSWER A-size layout (8.5" x 11").
11" x 17" - Answer B-size layout.
ANSWER C-size layout measures 17" x 22".
