Variable Scale Ruler This is an online scale ruler that could be calibrated to actual size and the scale ratio is variable that could be set by yourself, you can set the scale ratio according to your needs, eg. Scale converter: calculate the actual length and the scale length according to the scale ratio. For instance, if you have a drawing at 3/16" = 1'-0" and you want to change it to 1" = 40'-0", you simply compare the two scale factors and adjust as required: For an on-screen image, measure the known dimension of an object in the image (eg: a wheel diameter) Printable scale ruler scale 1:200 Take a measurement from plan or on-screen image and enter it and the actual length it represents to calculate the scale. Scale a measurement to a larger or smaller measurement, which is useful for architecture, modelling, and other projects. The scale factor is used to compare the scales to each other. How to use this online ruler For the ruler to display correctly (i.e., in proportion to the actual physical size), it must be calibrated . 1:4, 1:8, 1:12, 1:16, 1:24, 1:32, 1:48, 1:64, 1:96, 1:128 , . Architectural Scale Ruler, Aluminum Triangular Scale Ruler Metric 1:20, 1:25, 1:50, 1:75, 1:100, 1:125 Standard 12 Inch for Architects, Students, Draftsman and Engineers-Black 4.5 out of 5 … Scale converter: calculate the actual length and the scale length according to the scale ratio. An architect uses the scale ruler to convert dimensions into a smaller drawing of a building plan. Rulex measuring products are manufactured in the UK and Europe, so you can rely on their accuracy. Other Rulex Scale Ruler Products: In addition to the flat oval and triangular ranges of scale rulers, we also offer a number of other measuring products including the concrete volume calculator and the map scale card which feature the most useful OS map scales. You can also add the real size and scaled size to find the scale factor. The maximum length of the ruler (fully visible when displayed on a sufficient screen) is 20 inches, or 50 centimeters (500 millimeters) for the metric scale option. Share to your good friends Welcome to share this online ruler to your freineds, if you do like it. The trick is to use the Scale Factor, which appears in our CAD Scale Factors article. Online Virtual Rulers online real size ruler: It's a good idea to check the products size, before we buying it from internet, try this virtual actural size ruler imperial scale A scale ruler is the three-sided ruler used by architects and readers of blueprints to convert between scaled drawings and the actual dimensions without having to resort to any mathematical calculations.