# What is Scale ? Importance of Scale.

Scale is an important aspect of surveying and refers to the relationship between the size of an object or feature represented on a plan or map and its actual size in the real world. There are two main types of scales in surveying:

1. Representative Fraction (RF) Scale: RF scale expresses the scale of a plan or map as a fraction, with the numerator equal to one and the denominator representing the ratio of the size of the object or feature on the map to its actual size in the real world.

2. Graphic Scale: Graphic scale is a bar scale that is drawn on the plan or map and used to measure distances and dimensions on the map. It typically consists of a line divided into equal units of length, with each unit representing a certain distance in the real world.

There are also different types of graphic scales, including linear scales and non-linear scales, each with its own advantages and disadvantages. It is important to choose the appropriate scale for a given survey, based on the type and purpose of the survey, and the size and complexity of the surveyed area. Scales help to provide an accurate representation of the surveyed area, and are essential for a variety of surveying applications, including land-use planning, engineering, construction, and legal and administrative purposes.

The importance of scale in surveying can be summarized as follows:

1. Accuracy: Scale provides a basis for accurate measurement of features and objects on the ground and their representation on maps and plans.

2. Communication: Scales allow different surveyors, engineers, and other professionals to communicate effectively and understand the same data and information.

3. Planning and Design: Scales are essential for land-use planning and design, as they help to determine the size and location of features and objects on the ground, and provide a basis for decisions about their development and use.

4. Construction and Engineering: Scales are important for construction and engineering projects, as they help to ensure that buildings, roads, and other structures are built to the correct size and dimension, and that they are located in the correct location.

5. Legal and Administrative Purposes: Scales are also important for legal and administrative purposes, as they provide a basis for property boundaries, rights-of-way, and other legal and administrative decisions related to land and property use.

6. Data Management: Scales provide a basis for the efficient and effective management of surveying data and information, and enable the integration of data from multiple sources and in different formats.

Overall, the importance of scale in surveying cannot be overemphasized, as it provides the foundation for accurate and reliable measurements and representations of the physical world, and supports a wide range of important applications and decisions.