ADDA DRAFTING CERTIFICATION: COMPETENCY
2(EQUIPMENT, TECHNIQUES, RULES, PRINCIPLES)
scale - Answer -1. A straight-edged strip of rigid material marked at regular intervals
and used to measure distances. 2. A proportion between two sets of dimensions used in
developing accurate, larger or smaller prototypes, or models of design ideas.
full-divided - Answer -every inch on scale is divided into as many parts as it measures
open-divided - Answer -only one inch on scale is divided into as many parts as the
scale measures
steel rule - Answer -more accurate than a plastic; of all measuring tools, it is the
simplest and most common; used to measure up to 300mm; measure straight line
accurately
1:2 - Answer -half size
1:4 - Answer -quarter size
mechanical scale - Answer -has 10 scales; used for mechanical drafting
triangles - Answer -two (generally plastic) pieces of equipment used to create parallel
and perpendicular lines, as well as lines at 30, 60, and 45 degrees
drafting machine - Answer -replaced need for t-squares, protractor, scales, and
triangles all in one
dividers - Answer -Used to divide a line into proportional parts, provide a quick way to
measure a length that must be used a number of times
metric scale - Answer -A type of scale based on equal intervals which specifies
precisely how much more or less one item measured on the scale is compared to
another
Architect's scale - Answer -tool used to caculate distance on blueprints;
this has one full-size scale and 10 overlaping reduced-size scales
phantom line - Answer -A line used to show the alternate positions of an object or
matching part without interfering with the main drawing; .6mm
11 - Answer -number of scales on architect scale
10 - Answer -number of scales on mechanical scale
2(EQUIPMENT, TECHNIQUES, RULES, PRINCIPLES)
scale - Answer -1. A straight-edged strip of rigid material marked at regular intervals
and used to measure distances. 2. A proportion between two sets of dimensions used in
developing accurate, larger or smaller prototypes, or models of design ideas.
full-divided - Answer -every inch on scale is divided into as many parts as it measures
open-divided - Answer -only one inch on scale is divided into as many parts as the
scale measures
steel rule - Answer -more accurate than a plastic; of all measuring tools, it is the
simplest and most common; used to measure up to 300mm; measure straight line
accurately
1:2 - Answer -half size
1:4 - Answer -quarter size
mechanical scale - Answer -has 10 scales; used for mechanical drafting
triangles - Answer -two (generally plastic) pieces of equipment used to create parallel
and perpendicular lines, as well as lines at 30, 60, and 45 degrees
drafting machine - Answer -replaced need for t-squares, protractor, scales, and
triangles all in one
dividers - Answer -Used to divide a line into proportional parts, provide a quick way to
measure a length that must be used a number of times
metric scale - Answer -A type of scale based on equal intervals which specifies
precisely how much more or less one item measured on the scale is compared to
another
Architect's scale - Answer -tool used to caculate distance on blueprints;
this has one full-size scale and 10 overlaping reduced-size scales
phantom line - Answer -A line used to show the alternate positions of an object or
matching part without interfering with the main drawing; .6mm
11 - Answer -number of scales on architect scale
10 - Answer -number of scales on mechanical scale
