Module 3 Drafting Equipment Identify Basic Drafting Equipment

Common Drafting Equipment • Drawing Board – Provides smooth flat Surface for drawing • T-Square/Parallel Bar Use for drawing horizontal lines • Triangles 30/60 and 45 degree used for vertical angular lines • Compass Used for drawing arcs and circles • Drafting machines

Common Drafting Equipment • Dividers Divides distances and transfers measurements • Pencil Pointers Used to sharpen drafting pencils • Erasers Type of paper determines type of eraser • Eraser Shield Allows the erasing of small areas without disturbing other parts of the drawing

Common Drafting Equipment • Dusting Brush • Protractor Measures and layout angles • French Curved lines that are not exactly circular in form are drawn with French Curves • Templates Enables drafters to complete usually time-consuming jobs is less time. • Pencils Comes in various hardness Most drafters use 4 H-or 5 H

SCALES and PAPER • Standard paper sizes – Size A • 9” x 12” – Size B • 12” x 18” – Size C • 18” x 24” – Size D • 24” x 34” – Size E • 34” x 44” • Scales – Architects Scale • All scales represent 1 foot 1/8” = 1’, ¼” = 1’ – Engineer’s Scale • Divided into 10, 20, 30, 40, 50 and 60 units per inch – Mechanical Drafters Scale • Divided into full size, ¾ , ½, ¼, 1/8 – Metric Scale • Divided into centimeters and millimeters

Architect’s Scale

ENGINEER’S SCALE

Review A Drawing board provides the____necessary for drafting Smooth flat surface The T-square or parallel bar is used to draw________ Horizontal lines Vertical and angular lines are drawn with ________ 30/60 and 45/45 degree triangle set squares

Review A compass is used to draw ____and _____ Circles and Arcs The erasing shield is used to________ erase small errors Angles can be measured and laid out using a _________ Protractor Why are scales important to drafters? because almost every line is a measured line