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 Curve 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 4H-or 5H

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