Math Lessons : How Does a Scale Ruler Work?

In order to understand how a scale rules works, the user must determine what their scale drawing dimensions are going to be. Discover how to use a 16th-inch scale ruler with help from a math teacher in this free video on basic math lessons.

Expert: Jimmy Chang
Bio: Jimmy Chang has been a math teacher at St. Pete College for nearly a decade. He has a master's degree in math, and his specialties include calculus, algebra, liberal arts, math and trigonometry.
Filmmaker: Christopher Rokosz

Category:

Howto & Style

Tags:

• mathematics
• math
• math tips
• math help
• math problems
• math tutor
• math equations
• factoring
• fractions
• word problems
• geometry

[obikelaulbai]

im lost

[GTRLamborghini]

Get with the metric system people.



[cristianelio]

Hi there it's nice to meet u, let me ask u something. my concern was what if a want to use a 1/8; 5/8; or something difficult in the scale rule... i used to used regular tape to get de scale but in a deferent way...can u please explain that for me. thank u very much...

[dannysplace7]

Or you could use metric :D

[WensleydaleMr]

Search on "Architect's_scale" to see what a real scale ruler looks like.

[WensleydaleMr]

In addition, what I am drawing is NOT "1/16th the size of the actual [size]"! If 1/16 inch is equal to a foot. The model is 1/192 of actual size. 1/16 x 1/12=1/192. It would be 1/16th, IF 1/16 = a foot. But this is 1/16 of 1/12th of a foot.

[WensleydaleMr]

Yes, that isn't a scale ruler. On a scale ruler, the scale is already on it, so you need no calculation. If I want 32 feet on a 1/16th inch scale, I turn the ruler to the 1/16th scale side, and draw my line until I reach 32, the math is already done.

If I was using a regular ruler, as he is, both sides of the equation need to be multiplied by 16 not by 32, as he says. A slip of the tongue, I suppose.

[GLOCKIOMM]

that is not a scale ruler