# Angular Measurement Construction and Use of Instruments for Angular Measurement

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• Published : April 10, 2013

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Angular Measurement Construction & Use of Instruments for Angular Measurement (Term Paper)

Name:
Sec :
Roll No:
Sub: Metrology & Measurement
Sub. Code: MEC-314
Reg. No.:
Submitted To: Mr. JASVIR SINGH

Angular Measurement Construction & Use of Instruments for Angular Measurement (Term Paper)

Name:
Sec :
Roll No:
Sub: Metrology & Measurement
Sub. Code: MEC-314
Reg. No.:
Submitted To: Mr. JASVIR SINGH

Acknowledgement

I would like to express my gratitude for the many helpful comments and suggestions, I have received over the last few days regarding the expository and critical aspects of my term work and especially for those comments which bear directly or may various arguments for the centre thesis of term work. I am indebted to several people in this regard. Most importantly I would like to thank my teacher for his days of supervision. His critical commentary on my work has played a major role in both the content and presentation of our discussion and arguments. I have extended my appreciation to the several sources which provided various kinds of knowledge base support for me during this period.

1. Introduction
* Objectives
2. Line Standard Angular Measuring Devices
* Protractors
* Universal Bevel Protractors
3. Face Standard Angular Measuring Devices
4. Measurement of Inclines
* Spirit Level
* Clinometer
5. Angle Comparators
6. Journals from different authors.
7. Summary
8. Keywords
9. References

Introduction

A Measuring instrument is a device for measuring a physical quantity. In the physical sciences, quality assurance, and engineering, measurement is the activity of obtaining and comparing physical quantities of real-world objects and events. Established standard objects and events are used as units, and the process of measurement gives a number relating the item under study and the referenced unit of measurement. Measuring instruments, and formal test methods which define the instrument's use, are the means by which these relations of numbers are obtained. All measuring instruments are subject to varying degrees of instrument error and measurement uncertainty. There are a wide variety of geometric features that are measured in angular units. These varieties include angular separation of bounding planes, angular spacing conditions related to circle, digression from a basic direction etc. Because of these diverse geometrical forms, different types of methods and equipment are available to measure angles in common angular units of degree, minute and second. Several factors come into picture in selection of suitable angular measuring instruments. These factors may be the size and general shape of the part, the location and angular accessibilities of the feature to be measured, expected range of angle variations, the required sensitivity and accuracy of measurement etc. Because of the different systems and techniques in angular measuring instruments, it is difficult to categorize them completely. As in linear measurement, they can be categorized in two groups. The first one is line standard instrument. It includes divided scales like protractors, bevel gauges. The second category of angular measuring instruments is called face standard instruments. Sine bars and angle gauges falls in this category. In this unit, we will discuss both types of angular measuring devices and the techniques used in determining the angle. In addition to that, we will have an overview of angle comparators (autocollimators). As we discuss the various types of angle measuring devices along the term paper we would have the following Objectives as the priorities and we should be able to * familiarize with various types of angular measuring devices, and *...