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CoolTechStuff: Scala Architectural and Engineering Scale

pg. 6 mortimer

LarryMortimer, AIA

Here’s a handy little app for your smart phone. With Scala you can go to that meeting and be confident you have any architectural, engineering or metric scale that you might need.6.0

What does it do: Scala provides a graphic on your mobile device of the following scales: Architectural scales: 12”=1’-0”, 6”=1’-0”, 3”=1’-0”, 1 1/2”=1’-0”, 1”=1’-0”, 3/4”=1’-0”, 1/2”=1’-0”, 3/8”=1’-0”, 1/4”=1’-0”, 3/16”=1’-0”, 1/8”=1’-0”, 3/32”=1’-0”, 1/16”=1’-0” (plus a variable scale range between full scale and 1/16”=1’-0”). Engineering scales: 1”=10’, 1”=20’, 1”=30’, 1”=40’, 1”=50’, 1”=60’, 1”=80’, 1”=100’ (plus a variable scale range between 1”=10’ and 1”=100’). Metric scales: 1:1, 1:2, 1:5, 1:10, 1:20, 1:25, 1:30, 1:40, 1:50, 1:75, 1:100, 1:125, 1:200, 1:250, 1:300, 1:400, 1:500, 1:1000.

System Requirements: iOS on iPhone or iPad

What does it cost: $2.99 or you can try a free version limited to a few scales.

6.1How Does it Work: For drawings with a known scale, place your device on the drawing, scroll to the scale of the printed drawing and the appropriate scale will appear. If the scale of a drawing is unknown, use the variable scale to match the scale of one known element, lock the scale and use it to measure other elements on that drawing. To measure an object, slide the measurement slider in fixed or variable scale modes, along the scale to see the desired measurement displayed. Secondary units can be displayed while measuring to quickly convert between architectural, engineering and metric scales. With precision control you can set the precision of the measurement units.6.2

Pros: It’s inexpensive, easy to use and very handy to have.

Cons: It’s only available on the iOS platform. I did find one minor bug, in full scale, secondary units in mm were displayed as cm not mm (secondary units in all other scales appeared to display correctly).

Conclusion: This is a very handy tool to measure printed drawings. If you have trouble reading the fine divisions at the beginning/end of an architectural scale, Scala will do it for you.

More Information and Purchase at:


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