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Flat Scales

Drafting Scales

We offer scales for architects, engineers, metric engineering, and mechanical drafting. A large selection of graduations are available for architectural engineering and metric engineering applications. These drafting scales are available in a variety of sizes and are made of plastic, wood, or aluminum. You will find triangular scales, 2 and 4 bevel scales from quality suppliers.


In drafting, architecture and, engineering the term "scale" has two meanings. A scale is a dimension that represents the structure shown in a plan. A scale is also a ruler used in drawing and measuring architectural and engineering plans.

Architectural Scales

Units are based on foot/inch dimensions. Floor plan drawings are usually drawn to the scale of 1/4" = 1'-0". For a very large plan, a scale of 1/8" = 1'-0" may be used. When drawing a small plan or a single room, scales of 3/8" = 1'-0", 1/2" = 1'-0", 3/4" = 1'-0", or 1" = 1'-0" may be used to fit the size of your drawing format.

Engineers/Engineering Scales

Units of measure are equal to parts per inch and parts per foot. The most common graduations are 10, 20, 30, 40, 50, and 60 parts per inch, but there are scales available that have 100, 200, 300, 400, 500, and 600 parts per foot. The graduations vary based on the application.

Metric Engineering Scales

Metric scale measurements is the standard in most of the world. The principles are similar. You have to get used to measurements expressed in meters (m) and millimeters (mm). One meter is slightly larger than one yard. A millimeter is 1/1000 of a meter. Metric scales are usually based on ratios. A ratio is the relationship of one measurement to another. For example, metric plot plans are often drafted in ratios of 1:100. This scale is very close to the scale 1/8" = 1'-0" (1:96). Metric floor plans are generally drawn in a ratio of 1:50. This is very close to a scale of 1/4" = 1'-0" (1:48). Construction details may be drawn to metric scales of 1:20, 1:10, or 1:5. (It should be noted that all dimensions in metric dimensions are in millimeters.) Therefore, it is not necessary to use the symbol mm.

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12" 2 Bevel Plastic/Architect Item #: 280P
Tiger#: TS3249
12" Opposite-bevel Plastic Item #: 258P
Tiger#: TS3243
12" Plastic 2 Bevel/Architec Item #: 280XP
Tiger#: TS3250
Price: $23.10
Ships Within:
24 - 48 Hours
Availability: In Stock
6" 4 Bevel Plastic/Engineer Item #: 311E
Tiger#: TS3252
Price: $5.25
Ships Within:
24 - 48 Hours
Availability: In Stock
Price: $11.95
Ships Within:
24 - 48 Hours
Availability: In Stock
Price: $4.99
Ships Within:
24 - 48 Hours
Availability: In Stock

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