Drawing to Scale Chris Wakefield HTHMA

Why Draw to Scale? To create a drawing which is proportionately the same To create a drawing which is proportionately the same This helps with construction This helps with construction

Terms You Need to Know ‘ means feet ‘ means feet “ means inches “ means inches Proportional – Properly related in size Proportional – Properly related in size 1 inch on paper = 1 foot in real life 1 inch on paper = 1 foot in real life

How to Draw to Scale – Step 1 Step 1 Step 1 Start with a rough sketch Start with a rough sketch Include labels and measurements Include labels and measurements Get materials Get materials Pencils, ruler, eraser, Pencils, ruler, eraser, paper (light graph paper is better) is better)

How to Draw to Scale –Step 2 Calculate the scale of your drawing Calculate the scale of your drawing Base size of drawings on 7” X 9.5” drawing area (to leave margin room) Base size of drawings on 7” X 9.5” drawing area (to leave margin room) If your object is 7’ X 9.5’, then you would use a 1”:12” scale If your object is 7’ X 9.5’, then you would use a 1”:12” scale

Example of Scale 1:4 1:4 Pronounced "One to Four" Pronounced "One to Four" QUARTER SIZE or 1 millimeter on paper= 4 millimeters in real life. QUARTER SIZE or 1 millimeter on paper= 4 millimeters in real life. The drawing is one quarter the size of the artifact. The drawing is one quarter the size of the artifact.

Other Examples of Scale 3/16" = 1' (1:64 scale) 3/16" = 1' (1:64 scale) 1/8" = 1' (1:96 scale) 1/8" = 1' (1:96 scale) 1/4" = 1' (1:48 scale) 1/4" = 1' (1:48 scale) 1/2" = 1' (1:24 scale) 1/2" = 1' (1:24 scale) 3/4" = 1' (1:16 scale) 3/4" = 1' (1:16 scale) 1" = 1' (1:12 scale) 1" = 1' (1:12 scale) 1-3/8" = 1' (1:8.7 scale) 1-3/8" = 1' (1:8.7 scale) 1-1/2" = 1' (1:8 scale) 1-1/2" = 1' (1:8 scale) and 3" = 1' (1:4 scale) and 3" = 1' (1:4 scale)

Practice with Proportions Calculate how long your line will be on your paper if your measurement is listed below Calculate how long your line will be on your paper if your measurement is listed below 3/16" = 1' (1:64 scale) -3 feet 3/16" = 1' (1:64 scale) -3 feet 1/8" = 1' (1:96 scale) -6 feet 1/8" = 1' (1:96 scale) -6 feet 1/4" = 1' (1:48 scale) -2 feet 1/4" = 1' (1:48 scale) -2 feet 1/2" = 1' (1:24 scale) -18 inches 1/2" = 1' (1:24 scale) -18 inches 3/4" = 1' (1:16 scale) -26 inches 3/4" = 1' (1:16 scale) -26 inches 1" = 1' (1:12 scale) -17 inches 1" = 1' (1:12 scale) -17 inches

How to Draw to Scale – Step 3 Make all calculations for drawing Make all calculations for drawing Use your scale to calculate the dimensions Use your scale to calculate the dimensions

How to Draw to Scale – Step 4 Start with your top edge and work across with ruler Start with your top edge and work across with ruler Continue drawing all lines Continue drawing all lines Label actual (real life) sizes, not sizes on paper Label actual (real life) sizes, not sizes on paper

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Practice Draw the tabletop to scale Draw the tabletop to scale