Engineering Drawing Scale Ratio

It can be indicated in two different ways.

Engineering drawing scale ratio.

Most of engineering students get confused about scale reduction and enlargement. Where the denominator is the number after the colon. Example blueprint drawing scale 1 50. In the past prints were plotted on a plotter to exact scale ratios and the user could know that a line on the drawing 15mm long corresponded to a 30mm part dimension because the drawing said 1 2 in the scale box of the title block.

20 x 12 scale factor 240. A scale is shown as a ratio for example 1 100. Scale is the ratio of the linear dimension of an element of an object as represented in the drawing to the real linear dimension of the same element of the object itself. Two common examples are an architect s scale and engineer s scale in scientific and engineering terminology a device to measure linear distance and create proportional linear measurements is called a scale.

Usually the word scale is used for an instrument used for drawing straight lines. Blueprint drawings are typically drawn in. Multiply the measurement on the drawing with the denominator. Scale drawings show an image either reduced or enlarged in size.

1 8 1 0 invert the fraction and multiply by 12. Aaa drafting using a scale to read an engineering drawing. The ratio and decimal numbers can be helpful if you are working in paper space and need to know what the scale factors are for window resizing in order to create the proper scale. Scale the original border down by this amount and your scale is changed.

1 20 1 50 or 1 100 si units or. 1 4 or 1 8 imperial units us scales. To scale a si drawing. 1 20 multiply the feet by 12.

With visual graphic and formula it let us more easily understand the calculation process and the result. Select the desired scale. To convert an engineering drawing scale to a scale factor. The change between the original and the scaled drawing is generally represented by two numbers separated by a colon like 10 1 read as ten to one.

Working out the scale. 8 1 x 12 scale factor 96. This is an online scale length converter that calculates the actual length and the scale length according to the scale ratio. A drawing at a scale of 1 100 means that the object is 100 times smaller than in real life scale 1 1.

Scale ratio could be set by yourself supports different length units including imperial units and metric units. To convert an architectural drawing scale to a scale factor. The difference between the ratio numbers represents the factor by which the scaled image is enlarged or reduced. But actually in engineer s language scale means the proportion or ratio between the dimensions adopted for the drawing and the corresponding dimensions of the object.