Drawing Engineering Scale

If the object is either too small or too large to draw full scale the designer scales it up or down. Usually the word scale is used for an instrument used for drawing straight lines. 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.

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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.

Drawing engineering scale. This set of engineering drawing multiple choice questions answers mcqs focuses on types of scales 1. Definition a scale is defined as the ratio of the linear. Most of engineering students get confused about scale reduction and enlargement.

The number 1 means 1 graduation of 1 inch represents 1 foot. Engineering drawing lecture 3 05 08 2011 scales and engineering curves indian institute of technology guwahati guwahati 781039. What is the type of scale in which the representative fraction is 1 1.

Scale drawings show an image either reduced or enlarged in size. Check the drawing scale in the example at the left the scale is 1 1 0 use a engineering scale. Of the shrinkage of the engineer s scale when the drawing becomes old.

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. Technical drawing has existed since ancient times. Scales used in technical drawings.

Read the graduations on the scale you should get the same dimension. 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. A scale ruler is a tool for measuring lengths and transferring measurements at a fixed ratio of length.

A enlarged scale b reduced scale c full size scale d graphical scale view answer. If the object you sketch is 50 cm 500mm long but your drawing is 5cm 50mm long scale is 1 10. It can be indicated in two different ways.

Technical drawings are drawn to scale so that engineers architects and builders can create the objects in the drawing to exact. 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. Find an even whole number dimension on the drawing and check it with the scale.

To put simple it is the ratio of your drawing s size to the size of actual object. Full scale drawings show the actual size of an object.

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