Search by category:

# Types of Dimensioning Methods and How to Understand Them

Understanding the dimensions in the engineering drawing it depends on the dimension lines which are showing the measure of the Line length, Circle Radius or Diameter etc..,

• An engineering drawing should contain the details of the regarding sizes. The expressions of details in terms in numerical values regarding distances between surfaces etc.
• On a engineering drawing use of lines and required symbols,units is known as Dimensioning.

## METHODS OF DIMENSIONING

1. Unidirectional System
2. Aligned System

Unidirectional System : Unidirectional system method of dimensions are horizontally placed so that they can be read from Bottom of the drawing sheet. The methods of dimensions are easy to understanding the engineering drawing.

Aligned System : In this system of dimensions are placed parallel and above the dimension lines , preferably in the middle and not by interrupting the dimension lines.

## TYPES OF DIMENSIONS

1. Horizontal Dimension
2. Vertical Dimension
3. Parallel Dimension
4. Perpendicular Dimension
5. Chamfer Dimensions
6. Angular Dimensions
7. Cylindrical Dimensions
8. Hole Dimensions
9. Diameter Dimensions
11. Thickness Dimensions
12. Arc Length Dimension

Horizontal Dimensions

1. Horizontal Chain Dimension
2. Horizontal Baseline Dimension

Vertical Dimension

1. Vertical Chain Dimension
2. Vertical Baseline Dimension