ADDA Drafting Certification: Competency 2(Equipment, Techniques, Rules, Principles) Exam Study Guide Questions With Complete Solutions

ADDA Drafting Certification: Competency 2(Equipment, Techniques, Rules, Principles) Exam Study Guide Questions With Complete Solutions 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 draftingtriangles - 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 2:1 - answer-double size 1000 - answer-number of millimeters in a meter 100 - answer-number of centimeters in a meter10 - answer-number of decimeters in a meter meter - answer-basic unit of measure for metric scale; everything else is based off of this measure 12 inches - answer-length of most common form of steel rule t-square - answer-tool used from edge of drafting table to draw straight horizontal lines, to line paper perfectly horizontally as well as construct other angles with triangles 30-60-90 triangle - answer-tool used to draw 30º angles and to construct parallel and perpendicular lines, as well as to use in conjunction with other tools to create irregular angle measures (ex. 75º)