Engineering Drawing Scale

First check the drawing scale is accurate as above.

Engineering drawing scale.

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. 1 4 or 1 8 imperial units us scales. Usually the word scale is used for an instrument used for drawing straight lines. 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.

Most of engineering students get confused about scale reduction and enlargement. 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. It can be indicated in two different ways. 1 20 1 50 or 1 100 si units or.

1 8 1 0 invert the fraction and multiply by 12. To convert an architectural drawing scale to a scale factor. Engineers typically use this scale for drafting and blueprint creation. Multiply the measurement on the drawing with the denominator.

An engineering scale also known as an engineer s scale is actually a type of ruler that produces ratio drawings. The number 1 means 1 graduation of 1 inch represents 1 foot. For example with an engineering scale it is possible to manually create a drawing that is ten times larger or ten times smaller than the original that the engineer is drawing from. If the object you sketch is 50 cm 500mm long but your drawing is 5cm 50mm long scale is 1 10.

1 20 multiply the feet by 12. Blueprint drawings are typically drawn in. Where the denominator is the number after the colon. Select the desired scale.

Complex technical drawings were made in renaissance times such as the drawings of leonardo da vinci modern engineering drawing with its precise conventions of orthographic projection and scale arose in france at a time when the industrial revolution was in its infancy. Construction and fire protection equipment drawings must be interpreted with a high degree of accuracy. Technical drawing has existed since ancient times. Select the desired scale.

The smallest division on the scale is 1 4 here the plate thickness is not dimensioned but the scale reads 2 divisions or 1 2 check several other dimensions on the drawing to be sure the drawing is to scale. A scale ruler is a tool for measuring lengths and transferring measurements at a fixed ratio of length. Student performance objective given an architect or engineer scale and a set of scaled drawings you will be able to select the correct scale tool and interpret dimensions with 100 percent accuracy. To convert an engineering drawing scale to a scale factor.

Use a engineering scale. To scale a si drawing. To put simple it is the ratio of your drawing s size to the size of actual object.